β-Estradiol 3-benzoate 17-n-butyrate CAS 63042-18-2
| CAS No. | 63042-18-2 |
| Molecular Formula | C29H34O4 |
| Molecular Weight | 446.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, β-Estradiol 3-benzoate 17-n-butyrate (C29H34O4) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 446.58 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
β-Estradiol 3-benzoate 17-n-butyrate (CAS 63042-18-2) is a high-purity analytical reference standard with the molecular formula C29H34O4 and a molecular weight of 446.58 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), β-Estradiol 3-benzoate 17-n-butyrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H34O4 |
| Molecular Weight | 446.58 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
Related Estradiol Standards
- 17β-Estradiol 17β-D-Glucuronide (CAS 1806-98-0)
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- 17β-Estradiol-d3 3-β-D-Glucuronide (CAS 1260231-06-8)
- Estradiol Valerate Impurity 20 (CAS CATO-C4X-284220)
- Estradiol Valerate EP Impurity E (CAS 63042-28-4)
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- Estradiol Impurity 35 (CAS 1373116-15-4)
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