Sulfamethoxazole EP Impurity B CAS 135529-16-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 135529-16-7 |
| Molecular Formula | C16H16N4O5S2 |
| Molecular Weight | 408.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Sulfamethoxazole EP Impurity B (CAS 135529-16-7) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C16H16N4O5S2. Molecular weight: 408.45 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C16H16N4O5S2 |
| Molecular Weight | 408.45 g/mol |
| Purity | >95% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Sulfamethoxazole Standards
- Sulfamethoxazole Impurity 11 (CAS CATO-C4X-190911)
- Sulfamethoxazole N4-glucoside (alpha/beta mixture) (CAS 119691-75-7)
- Sulfamethoxazole b-D-Glucuronide (CAS 14365-52-7)
- Sulfamethoxazole EP Impurity A (CAS 21312-10-7)
- Sulfamethoxazole Impurity 9 (CAS 18607-98-2)
- Sulfamethoxazole-13C6 (CAS 1196157-90-0)
- Sulfamethoxazole-d4 (CAS 1020719-86-1)
- Sulfamethoxazole EP Impurity F (CAS 17103-52-5)
Recommended Standards
- Ethyl 5-(2-(2-(diethylamino)-2-oxoacetyl)-1H-pyrrol-1-yl)-1-phenyl-1H-pyrazole-4-carboxylate (CAS 477709-21-0)
- Melphalan Impurity 34 (CAS CATO-C4X-198834)
- Dicyclohexylphosphinic acid (CAS 832-39-3)
- Ticagrelor Impurity 108 (CAS 2417798-14-0)
- Fasudil Impurity 21 (CAS CATO-C4X-136521)
- Piracetam Impurity 50 (CAS CATO-C4X-123550)
- 7-Amino-2-methyl-3-(3-(trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine-6-carbonitrile (CAS 863305-83-3)
- (E)-Cinnamyl 3-methylbutanoate (CAS 69121-78-4)
- Cyclooctylmethanamine hydrochloride (CAS 1209904-16-4)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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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