5-Chloro-2-hydroxybenzothioamide CAS 79173-87-8
| CAS No. | 79173-87-8 |
| Molecular Formula | C7H6ClNOS |
| Molecular Weight | 187.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Chloro-2-hydroxybenzothioamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-Chloro-2-hydroxybenzothioamide (CAS 79173-87-8), molecular formula C7H6ClNOS and molecular weight 187.65 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-Chloro-2-hydroxybenzothioamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 187.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C7H6ClNOS |
| Molecular Weight | 187.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 3-Chloro-5-hydroxybenzenecarbothioamide (CAS 1216381-24-6)
- 2-Chloro-6-hydroxybenzothioamide (CAS 1248656-54-3)
- 5-Chloro-6-(methylthio)nicotinaldehyde (CAS 1288998-46-8)
- 2-chloro-4,5,6,7-tetrahydro-1,3-benzothiazol-6-one (CAS 159015-39-1)
- 2-Chloro-4-methyl-1-(sulfinylamino)benzene (CAS 1785759-39-8)
- 2-Chloro-1-methyl-4-(sulfinylamino)benzene (CAS 1785760-87-3)
- 1-Chloro-2-methyl-4-(sulfinylamino)benzene (CAS 1785760-98-6)
- 4-chloro-2-(dimethylamino)-1,3-thiazole-5-carbonitrile (CAS 1803581-29-4)
Recommended Standards
- 4-Pyridylthioacetylchloride (CAS 52998-13-7)
- 5-Chloro-N-methyl-1H-thieno[2,3-c]pyrazol-3-amine (CAS 2231674-20-5)
- 4-Chloro-1-methyl-2-(sulfinylamino)benzene (CAS 56911-09-2)
- n-(2-Methoxyethyl)-N-methylsulfamoyl chloride (CAS 355849-72-8)
- (4-(1,1-Difluoroethyl)pyrimidin-5-yl)methanamine hydrochloride (CAS 1427195-39-8)
- Methyl (R)-2-amino-2-(3-(trifluoromethyl)bicyclo[1.1.1]Pentan-1-yl)acetate (CAS 1984093-38-0)
- (E)-2-(4-Fluorobenzylidene)-5-methylbenzofuran-3(2H)-one (CAS 61976-55-4)
- Tetrodotoxin Citrate (CAS 18660-81-6)
- 1-Bromo-2-((4-isopropylphenoxy)methyl)benzene (CAS 1309933-00-3)
- trans-1-(Boc-amino)-4-cyanocyclohexane (CAS 873537-32-7)
- 2-(2-Amino-3-(difluoromethyl)pyridin-4-yl)acetonitrile (CAS 1805012-88-7)
- methyl 5-[(tert-butoxy)methyl]-1,2-oxazole-3-carboxylate (CAS 1803583-17-6)
- 5-Hydroxy-2-methylisonicotinaldehyde (CAS 1289174-09-9)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com