BENZTHIAZIDE

BENZTHIAZIDE Basic information
Product Name:BENZTHIAZIDE
Synonyms:6-Chloro-3-[[(phenylMethyl)thio]Methyl]-2H-1,2,4-benzothiadiazine-7-sulfonaMide 1,1-Dioxide;((benzylthio)methyl)-3chloro-6dioxyde-1,1sulfonamide-7benzothiadiazine-1,2,;-1,-dioxide;2H-1,2,4-Benzothiadiazine-7-sulfonamide, 3-((benzylthio)methyl)-6-chloro-, 1,1-dioxide;2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3-(((phenylmethyl)thio)methyl)-, dioxide;2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3-[[(phenylmethyl)thio]methyl]-, 1,1-dioxide;2h-1,2,4-benzothiadiazine-7-sulfonamide,3-((benzylthio)menthyl)-6-chloro-,1,1;2h-1,2,4-benzothiadiazine-7-sulfonamide,6-chloro-3-(((phenylmethyl)thio)methyl
CAS:91-33-8
MF:C15H14ClN3O4S3
MW:431.94
EINECS:202-061-0
Product Categories:Aromatics;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals;Sulfur & Selenium Compounds;AQUATAG;Heterocyclic Compounds;Building Blocks;Chemical Synthesis;Heterocyclic Building Blocks;Others;S-Containing
Mol File:91-33-8.mol
BENZTHIAZIDE Structure
BENZTHIAZIDE Chemical Properties
Melting point 231-232° (U.S. patent); mp 238-239° (P'an)
Boiling point 680.6±65.0 °C(Predicted)
density 1.4176 (rough estimate)
refractive index 1.6100 (estimate)
storage temp. Refrigerator
solubility DMSO (Slightly), Methanol (Slightly)
pka9.57±0.20(Predicted)
form Solid
color White to Off-White
Water Solubility 2.8mg/L(room temperature)
EPA Substance Registry System2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3-[[(phenylmethyl)thio]methyl]-, 1,1-dioxide (91-33-8)
Safety Information
Hazard Codes Xn
Risk Statements 42/43
Safety Statements 26-36
WGK Germany 2
RTECS DK8400000
Hazardous Substances Data91-33-8(Hazardous Substances Data)
ToxicityLD50 in mice, rats (mg/kg): >5000, >10000 orally; 410, 422 i.v. (P'an)
MSDS Information
ProviderLanguage
SigmaAldrich English
BENZTHIAZIDE Usage And Synthesis
OriginatorExna,Robins,US,1960
UsesBenzthiazide is a diuretic, antihypertensive agent.
DefinitionChEBI: 7-Sulfamoyl-1,2,4-benzothiadiazine 1,1-dioxide in which the hydrogen at position 6 is substituted by chlorine and that at position 3 is substituted by a benzylsulfanylmethyl group. A diuretic, it is used to treat hypertension and edema.
Manufacturing ProcessThe preparation of the dihydro analog is as follows:
(A) Preparation of 3-Chloromethyl-6-Chloro-7-Sulfamyl-3,4-DihydroBenzothiadizine-1,1-Dioxide - To 8 ml of 40-50% chloroacetaldehyde aqueous solution and 7 ml of dimethylformamide are added 10 grams of 2,4- disulfamyl-5-chloroaniline. The mixture is heated on a steam bath for 2 hours after which it is concentrated at reduced pressure. The residue is triturated with water. The solid material is recrystallized from methanol-ether after treatment with activated carbon to give 7.2 grams of product, MP 229°- 230°C.
(B) Preparation of Benzylthiomethyl-6-Chloro-7-Sulfamyl-3,4- Dihydrobenzothiadiazine-1,1-Dioxide - A mixture of 3-(chloromethyl)-6-chloro- 7-sulfamyl-3,4-dihydrobenzothiadiazine-1,1-dioxide (0.02 mol) and benzylmercaptan (0.024 mol) in 20 ml of 10% sodium hydroxide and 20 ml of dimethylformamide is stirred at room temperature for 6 hours. After heating for 10 minutes on a steam bath, the mixture is cooled and acidified with 6 N HCl. The product, after recrystallization from acetone, melts at 210°-211°C.

Brand nameAquatag (Solvay Pharmaceuticals); Fovane (Pfizer).
Therapeutic FunctionDiuretic, Antihypertensive
Safety ProfilePoison by intravenous route. Adiuretic and antihypertensive agent. When heated todecomposition it emits very toxic fumes of SOx, NOx, andCl-.
BENZTHIAZIDE Preparation Products And Raw materials
Raw materialsChloroacetaldehyde-->Benzyl mercaptan
2-(BENZYLTHIO)ETHYLAMINE HYDROCHLORIDE 2-AMINO-N-METHYLBENZENESULFONAMIDE 2H-1,2,4-Benzothiadiazine 1,1-dioxide 4-Chloro-N-methylbenzenesulphonamide 4-CHLORO-1,3-BENZENEDITHIOL 2-METHYLSULFANYL-ACETAMIDINE Xylazine Hydrochloride CLOFENAMIDE Chlorothiazide Xylazine hydrobentizide 4-Amino-6-chlorobenzene-1,3-disulfonamide BENZTHIAZIDE 2-Aminobenzenesulfonamide

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