Bis-PEG13-NHS ester CAS 2221949-00-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2221949-00-2 |
| Molecular Formula | C38H64N2O21 |
| Molecular Weight | 884.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Bis-PEG13-NHS ester (CAS 2221949-00-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C38H64N2O21. Molecular weight: 884.92 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C38H64N2O21 |
| Molecular Weight | 884.92 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Bis-dPEG<SUP>®</SUP><SUB>13</SUB>-NHS ester (CAS 1008402-79-6)
- Heptacarboxylporphyrin I heptamethyl ester (CAS 885267-27-6)
- 4',4''',4''''',4'''''''-(Ethene-1,1,2,2-tetrayl)tetrakis(3-fluoro-[1,1'-biphenyl]-4-carboxylicacid) (CAS 1643112-48-4)
- (9Z,12Z)-N-(2-oleamidoethyl)octadeca-9,12-dienamide (CAS 14990-62-6)
- 3-Methoxy-2-((4-nitrobenzyl)oxy)benzaldehyde (CAS 591241-28-0)
- 5-(2-Fluorophenyl)-1-methyl-1h-pyrrole-2-carboxylic acid (CAS 1017414-92-4)
- tetrahydropyran-4-ylhydrazine (CAS 116312-69-7)
- 5,5'-Dibromo-3,3',4,4'-tetramethyl-2,2'-bithiophene (CAS 174586-97-1)
- Ethyl 4-((1H-1,2,4-triazol-5-yl)methyl)benzoate (CAS 1785759-21-8)
- Tirzepatide Impurity 34 (CAS CATO-C4X-324034)
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