1-tert-Butyl 3-ethyl 2-(triphenylphosphoranylidene)malonate CAS 157188-20-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 157188-20-0 |
| Molecular Formula | C27H29O4P |
| Molecular Weight | 448.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 1-tert-Butyl 3-ethyl 2-(triphenylphosphoranylidene)malonate (CAS 157188-20-0) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C27H29O4P. Molecular weight: 448.49 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C27H29O4P |
| Molecular Weight | 448.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
Recommended Standards
- 2-(4'-(3-Methyl-4-(phenylsulfonamido)isoxazol-5-yl)-[1,1'-biphenyl]-4-yl)acetic acid (CAS 1423683-57-1)
- 2-(phenothiazin-3-ylideneamino)benzene-1,4-disulfonic acid (CAS 178861-30-8)
- N-(5-(4-Acetylpiperazin-1-yl)pyridin-2-yl)-2-(2'-fluoro-3-methyl-[2,4'-bipyridin]-5-yl)acetamide (CAS 1243245-18-2)
- 2,2-Dimethylpropane-1,3-diyl diacetate (CAS 13431-57-7)
- 6”-O-xylosyl-glycitin (CAS 231288-18-9)
- 4-Chloro-2-[(2,4-difluorophenyl)carbamoyl]phenyl N,N-dimethylsulfamate (CAS 400080-35-5)
- Ethyl 5-amino-1-(4-methoxy-2-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 1416345-17-9)
- PAT-505 (CAS 1782070-22-7)
- 3-(4,5-Dimethoxy-2-nitrophenyl)-2-(3,4,5-trimethoxyphenyl)acrylic acid (CAS 353-23-6)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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