2-Amino-4-chloro-5-methylbenzenethiol CAS 172507-87-8
| CAS No. | 172507-87-8 |
| Molecular Formula | C7H8ClNS |
| Molecular Weight | 173.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Amino-4-chloro-5-methylbenzenethiol (CAS 172507-87-8), molecular formula C7H8ClNS and molecular weight 173.66 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H8ClNS, 2-Amino-4-chloro-5-methylbenzenethiol contains a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 173.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 2-Amino-4-chloro-5-methylbenzenethiol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H8ClNS |
| Molecular Weight | 173.66 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 2-amino-5-chloro-3-methylbenzenethiol (CAS 101326-14-1)
- 4-Amino-2-chloro-5-methoxyphenol (CAS 1098068-20-2)
- 3-Amino-5-chloro-1-ethylpyrazin-2(1H)-one (CAS 1269530-97-3)
- (4-Amino-2-chloro-6-methylpyrimidin-5-yl)methanol (CAS 858269-23-5)
- 1-(3-Amino-5-methyl-1H-pyrazol-1-yl)-2-chloroethanone (CAS 453576-50-6)
- 2-Amino-4-chloro-5-methoxyphenol (CAS 87701-48-2)
- 2-Amino-5-(2-chloroethyl)pyrimidin-4-ol (CAS 805180-47-6)
- 2-Amino-5-Chloro-4-methoxyphenol (CAS 98280-37-6)
Recommended Standards
- 2-(Chloromethyl)-4-cyclopropyl-1,3-thiazole (CAS 170881-60-4)
- 2-Chloro-3-methyl-5-(methylthio)pyridine (CAS 1820706-01-1)
- 5-Chloro-2-(methylsulfanyl)aniline (CAS 16423-54-4)
- 2-Chloro-4-methyl-5-(methylthio)pyridine (CAS 1823353-55-4)
- 2-((5-Methyl-4-phenyl-4h-1,2,4-triazol-3-yl)thio)acetic acid (CAS 200815-83-4)
- 2-(5-Iodo-1H-indol-3-yl)acetonitrile (CAS 90800-17-2)
- 1-(2-Aminoethoxy)-2-methylpropan-2-ol hydrochloride (CAS 947664-21-3)
- 1-(Difluoromethyl)-4-fluoro-2-(trifluoromethyl)benzene (CAS 1214334-45-8)
- 1-(5-(tert-Butyl)isoxazol-3-yl)-3-phenylurea (CAS 55807-76-6)
- Terephthalaldehyde (CAS 623-27-8)
- 2-(Hydroxymethyl)-1-oxaspiro[5.5]undecan-9-one (CAS 2177259-17-3)
- 3-(methanesulfonylcarbamoyl)benzoic acid (CAS 865295-29-0)
- n-Benzyl-n-methylsulfamoyl chloride (CAS 36959-70-3)
- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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