Category: isothiazole

Xiong, Qiwu et al. published their research in Zhongwai Nengyuan in 2013 | CAS: 1003-07-2

Isothiazol-3(2H)-one (cas: 1003-07-2) belongs to isothiazole derivatives. Similar to other five-membered heterocycles, isothiazoles react with a wide range of electrophilic and nucleophilic reagents to form diverse products. Various penicillins and cephalosporins having an isothiazole ring system have shown considerable antibacterial efficacy against Gram-positive and Gram-negative bacteria.SDS of cas: 1003-07-2

Causes of malfunctions of RO sewage treatment plant and countermeasures was written by Xiong, Qiwu;Chang, Kai. And the article was included in Zhongwai Nengyuan in 2013.SDS of cas: 1003-07-2 This article mentions the following:

Sinopec Yanshan Company’s 1200 m3/h ultra-filtration reverse osmosis sewage treatment plant met with a serious fault after nearly six years of stable operation. The RO membrane was seriously contaminated, resulting in a steep decline in output of treated water. Anal. showed that RO membrane blockage was the main cause of this breakdown, which resulted from the rapid growth of microorganism at high temperatures in summer days and the precipitation of salt due to high contents of inorganic salts in the water being treated, such as iron, manganese and aluminum. Based on field experiment results and actual production conditions, technicians proposed and took countermeasures, including adding inoxidable bactericides (isothiazolinone and DBNPA; dosing method: impact mode + continuous low-concentration dosing; dose: about 100 mg/L), adding new type of scale inhibitor (dose: about 3 mg/L), increasing the use of sodium hypochlorite (residual chlorine in concentrated water controlled between 0.5 and 0.8 mg/L), controlling the use of polyaluminum chloride between 10 and 14 mg/L, and optimizing chem. cleaning schemes. After the above measures were taken, the contaminants on the RO membrane were brought under control and the performance of the membrane recovered. More than 70% of manganese ions were removed. The operation cycle of the sewage treatment plant was extended to about 20 days from seven days and output of treated water increased by 5 × 104t per mo. In the experiment, the researchers used many compounds, for example, Isothiazol-3(2H)-one (cas: 1003-07-2SDS of cas: 1003-07-2).

Isothiazol-3(2H)-one (cas: 1003-07-2) belongs to isothiazole derivatives. Similar to other five-membered heterocycles, isothiazoles react with a wide range of electrophilic and nucleophilic reagents to form diverse products. Various penicillins and cephalosporins having an isothiazole ring system have shown considerable antibacterial efficacy against Gram-positive and Gram-negative bacteria.SDS of cas: 1003-07-2

Referemce:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com

Berkhan, Gesche et al. published their research in Angewandte Chemie, International Edition in 2016 | CAS: 128947-19-3

1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one (cas: 128947-19-3) belongs to isothiazole derivatives. Isothiazoles and benzisothiazoles are usually liquids or low-melting-point solids; polar substituents increase the melting points because of the possibility of hydrogen bonding and other interactions in the crystalline state. In general, isothiazole undergoes nitration in the presence of HNO3, sulfuric acid, and sulfonation by using sulfuric acid under thermal conditions to generate corresponding 4-nitro- and 4-sulfonic acid derivatives, respectively.Quality Control of 1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one

The interplay between a multifunctional dehydratase domain and a C-methyltransferase effects olefin shift in ambruticin biosynthesis was written by Berkhan, Gesche;Merten, Christian;Holec, Claudia;Hahn, Frank. And the article was included in Angewandte Chemie, International Edition in 2016.Quality Control of 1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one This article mentions the following:

The olefin shift is an important modification during polyketide biosynthesis. Particularly for type I cis-AT PKS, little information has been gained on the enzymic mechanisms involved. We present our in vitro investigations on the olefin shift occurring during ambruticin biosynthesis. The unique, multifunctional domain AmbDH4 catalyzes consecutive dehydration, epimerization, and enoyl isomerization. The resulting 3-enethioate is removed from the equilibrium by α-methylation catalyzed by the highly specific C-methyltransferase AmbM. This thermodynamically unfavorable overall process is enabled by the high, concerted substrate specificity of the involved enzymes. AmbDH4 shows close relationship to DH domains and initial mechanistic studies suggest that the olefin shift occurs via a similar proton-shuttling mechanism as previously described for EI domains from trans-AT-PKS. In the experiment, the researchers used many compounds, for example, 1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one (cas: 128947-19-3Quality Control of 1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one).

1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one (cas: 128947-19-3) belongs to isothiazole derivatives. Isothiazoles and benzisothiazoles are usually liquids or low-melting-point solids; polar substituents increase the melting points because of the possibility of hydrogen bonding and other interactions in the crystalline state. In general, isothiazole undergoes nitration in the presence of HNO3, sulfuric acid, and sulfonation by using sulfuric acid under thermal conditions to generate corresponding 4-nitro- and 4-sulfonic acid derivatives, respectively.Quality Control of 1-((3aR,6S,7aS)-8,8-Dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)propan-1-one

Referemce:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com

Ashby, John’s team published research in Food and Cosmetics Toxicology in 16 | CAS: 7668-28-2

Food and Cosmetics Toxicology published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Name: 3-Aminobenzo[d]isothiazole 1,1-dioxide.

Ashby, John published the artcileSaccharin: an epigenetic carcinogen/mutagen?, Name: 3-Aminobenzo[d]isothiazole 1,1-dioxide, the publication is Food and Cosmetics Toxicology (1978), 16(2), 95-103, database is CAplus and MEDLINE.

Saccharin [81-07-2] together with 4 of the impurities found in the com. material and a further 9 functional analogs gave neg. results in the Salmonella reverse mutation assay of Ames et al. and the cell-transformation assay of Styles. The significance of these and related in vitro results was evaluated within the context of the ability of com. saccharin to cause bladder cancer in rats and dominant lethal effects in mice. Particular, evidence that the carcinogenicity and the dominant lethal effect associated with saccharin may be mediated by an epigenetic mechanism is evaluated, as is the possible role played by impurities in the generation of these and other biol. effects. The case for separating carcinogens into 2 classes, namely those that operate by a genotypic mechanism and those that elicit their effects via an epigenetic mechanism, is discussed. The compounds evaluated in the current study were saccharin base, Na saccharin [128-44-9], o-toluenesulfonamide [88-19-7], o-sulfonamidobenzoic acid [632-24-6], 5-chlorosaccharin [29083-16-7], 3-iminosaccharin [7668-28-2], 6-chlorosaccharin [46149-10-4], 5-chlorobenzisothiazoline-1,1-dioxide [2515-75-5], 6-aminosaccharin [22094-62-8], 6-nitrosaccharin [22952-24-5], 3-chloro-ψ-saccharin [567-19-1], n3,6-dichloro-ψ-saccharin [15864-53-6], 3-dimethylamino-ψ-saccharin [22716-43-4], 3-piperidinyl-ψ-saccharin [7668-30-6] and 3-pyrrolidino-ψ-saccharin [53541-65-4].

Food and Cosmetics Toxicology published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Name: 3-Aminobenzo[d]isothiazole 1,1-dioxide.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Whitehead, Calvert W.’s team published research in Journal of Organic Chemistry in 25 | CAS: 7668-28-2

Journal of Organic Chemistry published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C12H14O, Computed Properties of 7668-28-2.

Whitehead, Calvert W. published the artcileReaction of saccharin with amines. N-Substituted-3-amino-1,2-benzisothiazole 1,1-dioxides, Computed Properties of 7668-28-2, the publication is Journal of Organic Chemistry (1960), 413-16, database is CAplus.

A number of CH:CH.CH:CH.C:C.C(NHR):N.SO2 (I) were prepared for pharmacol. evaluation as diuretic or hypoglycemic agents. Method A. Saccharin (II) (0.1 mole) added to excess alkyl- or aralkylamine boiling at at least 130° (after initial salt formation, the II dissolved), the solution refluxed 8 hrs., the excess amine removed in vacuo, the residue treated with Et2O, and the precipitate crystallized from EtOH or aqueous EtOH gave I. Method B. Pseudosaccharin chloride (Meadow and Reid, CA 37, 23609) (0.05-0.10 mole) added portionwise to 2 equivalents appropriate amine in dioxane, the mixture heated 1 hr. on a steam bath, the dioxane removed in vacuo, the residue dissolved in dilute EtOH, the solution treated with C (if necessary), the filtered solution concentrated, cooled, and the precipitate crystallized gave I. The following I were prepared (R, m.p., % yield, method given): Me, 292° (decomposition), 25, B; CH2CH2OH, 238°, 31, A; Pr, 215°, 61, B; iso-Am, 166°, 20, B; (CH2)3NMe2, 150° (C6H6), 41, A; 3-pyridylmethyl, 224° 55, A; cyclohexyl, 248°, 40, A; CH2Ph, 209°, 55, A; CH2CH2Ph, 244°, 52, A; CH2C6H4Me-p, 222°, 56, A; CH2C6H4Me-m, 214°, 55, A; CH2C6H4OMe-p, 209°, 46, A. II (0.10-0.20 mole) added to PhCl containing 1 equivalent appropriate amine, the mixture refluxed 8 hrs., the PhCl removed in vacuo, the residue acidified with dilute HCl, cooled, the precipitate collected, and recrystallized from dilute EtOH gave N-substituted-o-sulfamoylbenzamides, o-RHNO2SC6H4CONHR’ (III). N-Methylsaccharin (IV) (Rice and Pettit, CA 49, 12365b) (0.05-0.10 mole) added to excess alkyl- or aralkylamine boiling at at least 130°, the mixture refluxed 8 hrs., the excess amine removed in vacuo, the residue treated with dilute HCl, the solution cooled, the precipitate collected, and recrystallized from dilute EtOH gave N-substituted-o-methylsulfamoylbenzamides. The following III were prepared (R, R’, m.p., % yield given): H, cyclohexyl, 196°, 21; H, CH2Ph, 103°, 31; Me, cyclohexyl, 130°, 53; Me, CH2Ph, 105°, 33; H, CH2CH2Ph, 108°, 20; H, CH2C6H4OMe-p, 115°, 15; Me, CH2C6H4Me-p, 104°, 49. II (18 g.) and 5 g. 100% N2H4.H2O (V) in 250 ml. dioxane heated 5 hrs. on a steam bath, after the mixture became homogeneous the dioxane removed in vacuo, the crystalline residue collected, and the product crystallized from EtOH gave 16.5 g. o-H2NO2SC6H4CONHNH2 (VI), m. 180° (decomposition) (EtOH). IV (20 g.) added to 150 ml. dioxane followed by 5 g. 100% V, the mixture heated 4 hrs. on a steam bath, the dioxane removed in vacuo, the residue dissolved in EtOH, the solution filtered, the filtrate concentrated to smaller volume, cooled, and the resulting precipitate crystallized from EtOH gave 17 g. o-MeHNO2SC6H4CONHNH2 (VII), m. 140°. VI (5 g.) warmed on a steam bath with 40 ml. Ac2O until solution occurred, the solution allowed to stand overnight at room temperature, the excess Ac2O removed in vacuo, the residue dissolved in EtOH, the solution concentrated to smaller volume, cooled, and the precipitate (3 g.) recrystallized from EtOH gave N-acetylsaccharin, m. 191°. VII (5 g.) warmed on a steam bath with 35 ml. Ac2O, allowed to stand overnight at room temperature, worked up as above, and the product (3.5 g.) recrystallized from EtOH gave o-MeHNO2SC6H4CONHNHAc, m. 164°.

Journal of Organic Chemistry published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C12H14O, Computed Properties of 7668-28-2.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Hettler, Hans’s team published research in Fresenius’ Zeitschrift fuer Analytische Chemie in 220 | CAS: 7668-28-2

Fresenius’ Zeitschrift fuer Analytische Chemie published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Safety of 3-Aminobenzo[d]isothiazole 1,1-dioxide.

Hettler, Hans published the artcileCharacterization of primary and secondary amines with pseudosaccharin chloride, Safety of 3-Aminobenzo[d]isothiazole 1,1-dioxide, the publication is Fresenius’ Zeitschrift fuer Analytische Chemie (1966), 220(1), 9-15, database is CAplus.

Pseudosaccharin chloride (I) treated with primary and secondary amines (RR’NH) gave amidine-type compounds (II) which were also obtained by reaction of amines with pseudosaccharin ethers (III). Methods used for the preparation were: (1) The pure amine or a solution [for sparingly soluble amines, solution in CO(NMe2)2 was used] was treated with I in an inert solvent (C6H6) and II precipitated by addition of H2O; (2) A 2% aqueous solution of the amine was shaken with a solution of I in C6H6 until II separated; (3) II precipitated when an aqueous solution of the amine was treated with a dioxane solution of I; (4) Reaction of III with the amine in MeCN, gave II after several hrs. at room temperature Using these methods the tabulated derivatives were prepared The Rf values were determined by thin layer chromatography on silica gel using 85:15 C6H6-MeOH. R, R’, Method, M.p., % yield, Rf; H, Me, 2, 303° (MeOH), 52, 0.44; H, Et, 2, 286° (MeOH), 73, 0.47; H, CH2CH2OH, 1, 246°, (MeCN), 79, 0.375; H, (CH2)9Me, 1, 73°, (cyclohexane), 79, 0.87; H, (CH2)13Me, 4, 145° (MeOH), 100, 0.645; H, (CH2)17Me, 1, 142°, (Me2CO), 92, 0.615; H, CH2CH:CH2, 2, 220° (Me2CO), 63, 0.395; H, (CH2)6NH (pseudosaccharin group), 3, 350° (CO(NMe2)2), -, 0.0; H, tert-u, 1, 255° (MeOH), 46, 0.36; H, p-MeC6H4CH2, 1, 228° (Me2CO-petr. ether), 98, 0.48; H, cyclohexyl, 1, 258° (MeCN), 96, 0.395; H, Ph, 1, 324° (MeCN), 99, 0.435; Et, Et, 1, 215° (MeCN), 96.5, 0.36; cyclohexyl, cyclohexyl, 1, 259° (MeOH), 99, 0.660; Ph, Ph, 1, 260° (MeOH), 96, 0.715; CH2CH2OH, CH2CH2OH, 3, 165° (MeCN), 65, 0.275; H, H, 4, 312° (Me2CO), 100, 0.35; H, NH2, 1, 245° (MeOH), 100, 0.42; Piperidine reacted with I (method 4) to give 100% II (NRR’ = piperidino), m. 211° (MeCN). Morpholine (method 1) gave 87.5% II (NRR’ = morpholino), m. 234° (MeCN). Ph2C:NOH (method 1) gave 73% (IV), m. 165° (MeCN).

Fresenius’ Zeitschrift fuer Analytische Chemie published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Safety of 3-Aminobenzo[d]isothiazole 1,1-dioxide.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Klarmann, Bodo’s team published research in Chemische Berichte in 85 | CAS: 7668-28-2

Chemische Berichte published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Synthetic Route of 7668-28-2.

Klarmann, Bodo published the artcileSaccharinimine, Synthetic Route of 7668-28-2, the publication is Chemische Berichte (1952), 162-4, database is CAplus.

Heating 10 g. o-OHCC6H4SO2Cl with 80 cc. 30% aqueous NH4OH 2 hrs. at 60° with shaking in a bomb and keeping the mixture 12 hrs. at 0° give 2.5 g. saccharinimine, m. 300°. When the reaction is carried out at 100°, 2 g. saccharin (I), m. 220°, is obtained. Warming 20 g. I with 100 cc. 30% aqueous NH4OH 7 hrs. at 60°, keeping the mixture 12 hrs., and acidifying it give unchanged I. In this reaction o-HN:CHC6H4SO2NH2 is probably formed as an intermediate in which the CH(:NH) group is then oxidized to a C(:NH)OH group, followed by cyclization by splitting off of NH3.

Chemische Berichte published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Synthetic Route of 7668-28-2.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Nederlof, A.’s team published research in Recueil des Travaux Chimiques des Pays-Bas in 81 | CAS: 7668-28-2

Recueil des Travaux Chimiques des Pays-Bas published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Product Details of C7H6N2O2S.

Nederlof, A. published the artcileChemistry of rhodanine and its derivatives. Preliminary communication, Product Details of C7H6N2O2S, the publication is Recueil des Travaux Chimiques des Pays-Bas (1962), 578-80, database is CAplus.

Impure 5-(2,4-dinitrobenzylidne)-3-ethylrhodanine, m. 133°, was prepared by condensing 3-ethylrhodanine with 2,4-dinitrobenzaldehyde. Refluxing the impure product with EtOAc gave the more pure compound and presumably I (R = Et), m. 252-2.5°. The addition of large quantities of p-MeC6H4SO2Cl accelerated the formation of orange I (R = Et), as well as of I (R = CH2CH:CH2), m. 190.5-1°, and I (R = CH2CO2Et), m. 183-4°. These compounds reduced to readily autoxidized II (R = Et), light yellow, m. 155-7°, II (R = CH2CH:CH2), yellow, m. 121.5-3.5°, and II (R = CH2CO2Et), nearly colorless, m. 169-70°, resp. The “anil method” of rhodanine condensation gave purer compounds with higher yields. 3-Aminorhodanine reacted in boiling EtOH with p-nitrobenzaldehyde to give orange 3-amino-5-(p-nitrobenzylidene)rhodanine, m. 230-1°, not the yellow 3-(p-nitrobenzylidenamino)rhodanine as reported by Ueda and Ohta (CA 52, 401d).

Recueil des Travaux Chimiques des Pays-Bas published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Product Details of C7H6N2O2S.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Nelson, James J.’s team published research in EDRO SARAP Research Technical Reports in 1 | CAS: 7668-28-2

EDRO SARAP Research Technical Reports published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Related Products of isothiazole.

Nelson, James J. published the artcileQuantitation of o- and p-sulfamoylbenzoic acids in commercial saccharin by high speed liquid chromatography, Related Products of isothiazole, the publication is EDRO SARAP Research Technical Reports (1976), Paper 45-74, 25 pp., database is CAplus.

A 6 g saccharin [81-07-2] sample was dissolved in 30 mL MeOH, 1.6 mL HNO3 was added, and the mixture was chilled and centrifuged. The precipitate was shaken with 10 mL MeOH and centrifuged. The supernatant was dried under N, mixed with 0.2 mL MeOH, and again dried. An internal standard (p-hydroxybenzoate) was added and the material was subjected to high speed liquid chromatog. on a Dupont SAX column with 0.008M NaNO3 in 0.01M Na tetraborate buffer as the mobile phase. O-sulfamoylbenzoic acid [632-24-6] and p-sulfamoylbenzoic acid [138-41-0] were quantitated with a UV detector and were determined accurately at the 80 and 25 ppm levels, resp. O-toluenesulfonamide [88-19-7], p-toluenesulfonamide [70-55-3], 1,2-benzisothiazoline-1,1-dioxide [936-16-3], and 3-amino-1,2-benzisothiazole S-dioxide [7668-28-2] were extracted from saccharin with Me2CO and determined with an ODS column with isooctane as the mobile phase.

EDRO SARAP Research Technical Reports published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Related Products of isothiazole.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Renwick, A. G.’s team published research in Xenobiotica in 8 | CAS: 7668-28-2

Xenobiotica published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, COA of Formula: C7H6N2O2S.

Renwick, A. G. published the artcileThe fate of saccharin impurities: the metabolism and excretion of 3-amino[3-14C]benz[d]isothiazole-1,1-dioxide and 5-chlorosaccharin in the rat, COA of Formula: C7H6N2O2S, the publication is Xenobiotica (1978), 8(8), 487-94, database is CAplus and MEDLINE.

Most (87% of dose) of the 3-aminobenz[d]isothiazole 1,1-dioxide (I) [7668-28-2] (25 mg/kg, orally) was eliminated in the urine of rats within 24 h, 99% of which was unchanged I. 5-Chlorosaccharin [29083-16-7] (80 mg/kg, orally) administered to rats was excreted unchanged, with 76% dose in urine after 24 h, and only 4% in feces. There was <0.5% hydrolysis. Partition experiments indicated that chlorsaccharin had a polarity similar to saccharin, whereas I was more lipophilic, this being reflected in the extent of absorption from the gut and their metabolism

Xenobiotica published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, COA of Formula: C7H6N2O2S.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com

Chen, Yantao’s team published research in ACS Medicinal Chemistry Letters in 8 | CAS: 7668-28-2

ACS Medicinal Chemistry Letters published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Product Details of C7H6N2O2S.

Chen, Yantao published the artcileSaccharin Aza Bioisosteres-Synthesis and Preclinical Property Comparisons, Product Details of C7H6N2O2S, the publication is ACS Medicinal Chemistry Letters (2017), 8(6), 672-677, database is CAplus and MEDLINE.

Methods are disclosed for the preparation of azapseudosaccharins such as I and exo- and endo-N-substituted azasaccharins such as II; the pharmacokinetics (plasma protein binding, clearance, permeation through biol. membranes), physicochem. properties (lipophilicity, acidity, solubility in DMSO) and hERG binding were determined for selected (matched-pair) compounds Exo- or endo-N-substituted azasaccharins were prepared chemoselectively using primary amines by controlling the order of desilylation and cyclization reactions. The effect of sulfur stereochem. on the crystal structures and biol. properties of exo-N-substituted azasaccharins was studied in assays and using DFT calculations The structures of II and its diastereomer at sulfur were determined by X-ray crystallog.; the differences in crystal structure, solubility, and NMR chem. shifts were studied using DFT calculations

ACS Medicinal Chemistry Letters published new progress about 7668-28-2. 7668-28-2 belongs to isothiazole, auxiliary class Sulfamide,Amine,Benzothiazole, name is 3-Aminobenzo[d]isothiazole 1,1-dioxide, and the molecular formula is C7H6N2O2S, Product Details of C7H6N2O2S.

Referemce:
https://en.wikipedia.org/wiki/Isothiazole,
Isothiazole – ScienceDirect.com