3,17,17-Trimethoxy-estra-1,3,5(10)-triene CAS 133291-95-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 133291-95-9 |
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 3,17,17-Trimethoxy-estra-1,3,5(10)-triene (CAS 133291-95-9) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C21H30O3. Molecular weight: 330.46 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
Related Trimethoxy Standards
- Trimethoxy(2''-methoxy-[2,2':2',2''-teroxetan]-2-yl)silane (CAS 132388-45-5)
- 6,7,8-Trimethoxy-N-methyl-N-phenylquinazolin-4-amine (CAS 174892-23-0)
- 2,3,4-Trimethoxy-N-(2-morpholinoethyl)benzamide (CAS 861208-33-5)
- 1,2,3-trimethoxy-4,5-dihydro-6H-dibenzo[de,g]quinoline-6-carbaldehyde (CAS 107633-69-2)
- 3,4,5-Trimethoxy-N'-(3-oxocyclohex-1-en-1-yl)benzohydrazide (CAS 1119391-78-4)
- 1-Benzyl-5,6,7-trimethoxy-1h-indole-2-carboxylic acid (CAS 1240571-20-3)
- 1-Benzyl-4,5,6-trimethoxy-1h-indole-2-carboxylic acid (CAS 1240571-67-8)
- 5,7,8-Trimethoxy-3-(4-methoxyphenyl)-4H-chromen-4-one (CAS 13539-23-6)
Recommended Standards
- Boc-Leu-psi(CH2NH)Leu-OH (A-1880.0250) (CAS 127370-77-8)
- tert-Butyl 2-(benzylamino)-7-azaspiro[3.5]nonane-7-carboxylate (CAS 1352925-74-6)
- Tert-butyl 7-benzyl-2,7-diazaspiro[4.5]Decane-2-carboxylate (CAS 1245649-93-7)
- Tert-butyl (5-aminopentyl)carbamate hydrochloride (CAS 77835-31-5)
- (3aR,7aS)-rel-Tetrahydro-1H-pyrrolo[3,4-c]pyridin-2,5,7a(3H)-tricarboxylic acid 5-(tert-butyl) 2-(benzyl) ester (CAS 1245647-97-5)
- 5-Hydroxy-1H-indole-2-carboxylic Acid Ethyl Ester (CAS 24985-85-1)
- 2,4,5-Trifluoro-3-Methoxybenzoic Acid (CAS 11281-65-5)
- 3-(4-bromo-2-methoxyphenyl)propan-1-ol (CAS 1461715-36-5)
- 2-Chlorobenzyl (E)-(2-(furan-2-yl)vinyl)carbamate (CAS 338399-83-0)
- Exenatide (CAS 141758-74-9（free base）)
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