6-Chloro-4-methyl-1H-indole-3-thiol CAS 71501-26-3
| CAS No. | 71501-26-3 |
| Molecular Formula | C9H8ClNS |
| Molecular Weight | 197.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6-Chloro-4-methyl-1H-indole-3-thiol.
6-Chloro-4-methyl-1H-indole-3-thiol (CAS 71501-26-3), molecular formula C9H8ClNS and molecular weight 197.68 g/mol, is a CATO reference standard with documented purity and traceability.
6-Chloro-4-methyl-1H-indole-3-thiol (C9H8ClNS) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H8ClNS |
| Molecular Weight | 197.68 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5,6-dimethyl-1,3-benzothiazole (CAS 104076-80-4)
- 5-Chloro-2-ethylbenzo[d]thiazole (CAS 107611-11-0)
- 5-Chloro-2,4-dimethyl-benzothiazole (CAS 113571-08-7)
- 2-Chloro-6,7-dimethylbenzo[d]thiazole, 97% (CAS 1188046-08-3)
- 1-Chloro-n-(cyclopropylmethyl)-n-methylmethanesulfonamide (CAS 1339857-36-1)
- 1-Chloro-n-cyclopropyl-n-ethylmethanesulfonamide (CAS 1341768-61-3)
- 3-Chloro-1-methanesulfonylpiperidine (CAS 1343308-43-9)
- 7-Chloro-2-methylbenzo[b]thiophen-3-amine (CAS 1384428-23-2)
Recommended Standards
- 6-(Chloromethyl)-2-methylbenzo[d]thiazole (CAS 99846-82-9)
- 6-methylpyridine-3-sulfonyl chloride (CAS 478264-00-5)
- 5-Chloro-3-(methylthio)-1H-indole (CAS 40015-11-0)
- 7-Chloro-3,4-dihydroisoquinoline-1(2H)-thione (CAS 26406-59-7)
- n-Methyl-2,3-dihydro-1,4-benzodioxine-6-sulfonamide (CAS 90610-67-6)
- 1-(4-Benzyl-piperazin-1-yl)-2-chloro-ethanonehydrochloride (CAS 76087-89-3)
- (R)-3-Isopropyl-6-methylcyclohex-2-en-1-one (CAS 23733-65-5)
- 6-amino-2-azaspiro[3.3]heptane-6-carboxylic acid dihydrochloride (CAS 1170461-72-9)
- 3-Cyclopropoxy-2-formylbenzenesulfonamide (CAS 1243315-93-6)
- 4'-Methyl-[1,1'-biphenyl]-4-carboxamide (CAS 72366-65-5)
- Tert-butyl (4-formylbicyclo[2.1.1]Hexan-1-yl)carbamate (CAS 2387597-71-7)
- 2,3-Diamino-1-thioxo-1,2,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (CAS 50706-67-7)
- 2-Chloro-4-cyclopropyl-1-fluorobenzene (CAS 1563531-56-5)
- Semaglutide238 (CAS CATO-C4X-2226238)
Why CATO?
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