Spiramycin EP Impurity B CAS 249930-66-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 249930-66-3 |
| Molecular Formula | C43H76N2O14 |
| Molecular Weight | 845.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Spiramycin EP Impurity B (CAS 249930-66-3), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C43H76N2O14. Molecular weight: 845.07 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C43H76N2O14 |
| Molecular Weight | 845.07 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Spiramycin Standards
- Spiramycin EP Impurity D (CAS 87708-39-2)
- Spiramycin (CAS 8025-81-8)
- Spiramycin I (CAS 24916-50-5)
- Spiramycin EP Impurity E (CAS CATO-C4X-23255)
- Spiramycin EP Impurity D (CAS CATO-C4X-23254)
- Spiramycin EP Impurity E (CAS 177584-14-4)
- Spiramycin I (CAS CATO-C4X-2325)
- Spiramycin EP Impurity B (CAS CATO-C4X-23252)
Recommended Standards
- N-(Amino-PEG4)-N-bis(PEG4-Boc) (CAS 2093153-97-8)
- n10,n10'-Bis(4-methylnaphthalen-1-yl)-n10,n10'-di-p-tolyl-[9,9'-bianthracene]-10,10'-diamine (CAS 2304584-13-0)
- Zebularine 3-CE phosphoramidite (CAS 155831-90-6)
- Cefprozil EP Impurity K-Isomer 1 (CAS CATO-C4X-149216)
- Elagolix Impurity 3 (CAS 1150560-54-5)
- 3-Ethyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 1367976-77-9)
- Ceftiofur-d3 (CAS 2673269-87-7)
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(pyridin-2-ylmethyl)propanoic acid (CAS 1260590-58-6)
- (3-(Hydroxymethyl)phenyl)(imino)(methyl)-l6-sulfanone (CAS 2344680-52-8)
- Pancreatic Polypeptide (1-17)-(Ala31,Aib32)-Neuropeptide Y (18-36) (human) trifluoroacetate salt (CAS 313988-70-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com