Delta-5(10)-8-alfa-Levonorgestrel CAS 5772-36-1
| CAS No. | 5772-36-1 |
| Molecular Formula | C21H28O2 |
| Molecular Weight | 312.45 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.
Delta-5(10)-8-alfa-Levonorgestrel (CAS 5772-36-1) is a high-purity analytical reference standard with the molecular formula C21H28O2 and a molecular weight of 312.45 g/mol.
The molecular framework of Delta-5(10)-8-alfa-Levonorgestrel (C21H28O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C21H28O2 |
| Molecular Weight | 312.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Delta Standards
- 5-alfa-Dihydrolevonorgestrel (CAS 78088-19-4)
- 3-alfa,5-beta-Tetrahydro Levonorgestrel (CAS 19351-16-7)
- alfa-Levantenolide (CAS 30987-48-5)
- 20-alfa-Dihydropregnenolone (CAS 901-56-4)
- alfa-Bromo-(m-Benzoyloxy) acetophenone (CAS 139-27-5)
- alfa-oxo[(Phenylmethoxy) carbonyl]-1-piperidine acetic acid methyl ester (CAS 409366-76-3)
- alfa-(4-Toluenesulfonyl)-4-methoxybenzylisocyanide (CAS 263389-54-4)
- 16-alfa-Hydroxy Progesterone (CAS 438-07-3)
Recommended Standards
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- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
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