17beta-Estradiol-D4 CAS 66789-03-5
| CAS No. | 66789-03-5 |
| Molecular Formula | - |
| Molecular Weight | 276.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
17beta-Estradiol-D4 (CAS 66789-03-5), molecular formula C18H20D4O2 and molecular weight 276.41 g/mol, is a CATO reference standard with documented purity and traceability.
17beta-Estradiol-D4 (C18H20D4O2) contains deuterium isotope labeling, a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H20D4O2 |
| Molecular Weight | 276.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Related beta Standards
- 17β-Estradiol-2,4,16,16,17-d5 (CAS 221093-45-4)
- 17beta-Estradiol-16,16,17-D3 (CAS 79037-37-9)
- 17Α-Estradiol-16,16,17-D3 (CAS CATO-CCAD300789)
- 17β-Estradiol-[2,3,4-13C3] (CAS 1261254-48-1)
- 17β-Estradiol-2,4-d2 (CAS 53866-33-4)
- 17alpha-Estradiol-2,4-d2 (CAS 81586-94-9)
- 17β-Estradiol-16,16-d2 (CAS 3188-46-3)
- 17beta-Estradiol-13C2 (CAS 82938-05-4)
Recommended Standards
- Ethyl 6(Z),9(Z),12(Z),15(Z)-Hexadecatetraenoate (CAS 845779-89-7)
- Kinoprene (CAS 42588-37-4)
- Calcipotriol Impurity 40 (CAS 2106840-41-7)
- 4-(3-{[sec-Butyl(methyl)amino]methyl}phenyl)-piperidin-4-ol (CAS 1119451-18-1)
- [1-(3,4-dichlorophenyl)cyclopentyl]methanamine, HCl (CAS 1864072-56-9)
- n-(3-(2-Methylpiperidin-1-yl)propyl)cycloheptanamine (CAS 1019480-73-9)
- 8-Nitroquinolin-4-amine (CAS 89770-26-3)
- 9-Propyl-1H-purin-6(9H)-one (CAS 6972-38-9)
- 2-[(cyclohexylcarbonyl)amino]-4,5-dimethoxybenzoic acid (CAS 294892-11-8)
- N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-[4-(4-fluorophenyl)piperazin-1-yl]acetamide (CAS 329779-45-5)
- Methyl 2-chloro-5-fluoro-4-nitrobenzoate (CAS 1897500-78-5)
- 3-Ethylfuran-2,5-dione (CAS 14156-13-9)
- 2-(4-Methylphenyl)phenol (CAS 101043-55-4)
- [D-Glu]3-Semaglutide (CAS CATO-C4X-2226253)
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 18665070610 / Nicole.chen@cato-chem.com