2-Amino-4-methylbenzenesulfonic acid CAS 618-03-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 618-03-1 |
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Amino-4-methylbenzenesulfonic acid (CAS 618-03-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H9NO3S. Molecular weight: 187.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Amino-1,3,4-thiadiazolyl-5-acetic acid ethyl ester (CAS 88124-55-4)
- 2-Amino-4-methylbenzenesulfonic acid (CAS 88-62-0)
- 2-[(4-methyl-4h-1,2,4-triazol-3-yl)sulfanyl]propanoic acid (CAS 919465-98-8)
- 1-(2-Benzylphenyl)-4-methylpiperazine (CAS 131635-06-8)
- (2S,4S)-4-(Methoxymethoxy)pyrrolidine-2-carboxylic acid (CAS 810685-23-5)
- 2-(2-(4-(2-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)ethyl)phenyl)-2H-tetrazol-5-yl)-4,5-dimethoxyaniline (CAS 849675-46-3)
- Benzyl 3-hydroxy-3-(trifluoromethyl)azetidine-1-carboxylate (CAS 1356109-15-3)
- (R)-2-hexyl-6-iodo-1,2,3,4-tetrahydronaphthalene (CAS 1622180-63-5)
- 5-(4-Fluorophenyl)thieno[2,3-d]pyrimidine-4-thiol (CAS 356569-50-1)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
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