Acid orange 156 CAS 68555-86-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 68555-86-2 |
| Molecular Formula | C21H19N4O5S Na |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Acid orange 156 (CAS 68555-86-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C21H19N4O5S Na. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C21H19N4O5S Na |
| Molecular Weight | 462.46 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Acid Standards
Recommended Standards
- (5-Oxotetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate (CAS 107971-34-6)
- 2- Amino- 6- chloro- 4- pyrimidinol (CAS 1194-21-4)
- benzyl (R)-(1-cyclohexyl-2-hydroxyethyl)carbamate (CAS 200405-29-4)
- (4-(Difluoromethoxy)benzo[d]oxazol-2-yl)methanol (CAS 1806342-74-4)
- methyl (2S)-2-(1,3-dioxoisoindol-2-yl)-4-methylpentanoate (CAS 132785-19-4)
- 11,13-Dimethyl-4-sulfanyl-8-thia-3,5,10-triazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2,4,6,10,12-hexaen-6-ol (CAS 326891-39-8)
- Semaglutide Impurity 115 (CAS CATO-C4X-2226115)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com