5-Amino-2-nitrobenzenesulfonic acid CAS 551-91-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 551-91-7 |
| Molecular Formula | C16H13N3O4 |
| Molecular Weight | 311.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 5-Amino-2-nitrobenzenesulfonic acid (CAS 551-91-7) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C16H13N3O4. Molecular weight: 311.29 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C16H13N3O4 |
| Molecular Weight | 311.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 5-[(1,3-dioxo-2,3-dihydro-1h-isoindol-2-yl)methyl]-2-methoxybenzoic acid (CAS 556016-14-9)
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- 5-[(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-2-hydroxy-3-methylbenzoic acid (CAS 781626-90-2)
- 5-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridin-3-amine (CAS 2289603-27-4)
- 3-Methoxyphenylboronic acid (CAS 10365-98-7)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
- 1-Allylcyclopent-3-en-1-amine (CAS 2110264-05-4)
- propan-2-yl 4-chlorobenzoate (CAS 22913-11-7)
- 2,4-dichloro-5-[(pyridin-3-ylmethyl)sulfamoyl]benzoic acid (CAS 863416-28-8)
- Liraglutide Sodium Salt (CAS 204656-20-2（free base）)
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