Biotin-PEG8-NHS ester CAS 2143968-03-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2143968-03-8 |
| Molecular Formula | C33H56N4O14S |
| Molecular Weight | 764.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Biotin-PEG8-NHS ester (CAS 2143968-03-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C33H56N4O14S. Molecular weight: 764.88 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C33H56N4O14S |
| Molecular Weight | 764.88 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.) | 1997 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Biotin Standards
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- (+)-Biotin-PEG11-NH2 (+)-Biotin-PEG11-amine 604786-74-5 (CAS 604786-74-5)
- PC Biotin-PEG3-alkyne (CAS 1869922-24-6)
- N-Biotin-N-bis(PEG4-acid) (CAS 1964503-35-2)
- Biotin-PEG6-Thalidomide (CAS 2144775-48-2)
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- 956494-20-5 alpha-Biotin-omega-azido 23(ethylene glycol) (CAS 956494-20-5)
- PC-Biotin-PEG4-NHS carbonate (CAS 2055198-03-1)
Recommended Standards
- Methyl 2-(diphenylphosphanyl)-4-((13-oxo-17-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-3,6,9-trioxa-12-azaheptadecyl)carbamoyl)benzoate (CAS 851668-13-8)
- Gadopiclenol Impurity 3 (CAS 2410182-15-7)
- 1-3-4-6-Tetra-O-acetyl-2-(2-3-4-tri-O-benzyl-α-L-fucopyranosyl)-α-D-galactopyranose (CAS 56889-55-5)
- N,N',N''-(nitrilotris(ethane-2,1-diyl))tris(2,2,2-trifluoroacetamide) (CAS 207569-16-2)
- Levocabastine Impurity 11 (CAS 577036-07-8)
- Lefamulinum Impurity 47 (CAS CATO-C4X-304747)
- (3-Methyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6-yl)-acetic acid ethyl ester (CAS 571917-31-2)
- 2-(Iodomethyl)octahydrobenzofuran (CAS 1643386-07-5)
- 7-Methoxychroman-4-one (CAS 42327-52-6)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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