Melengestrol CAS 5633-18-1
| CAS No. | 5633-18-1 |
| Molecular Formula | C23H30O3 |
| Molecular Weight | 354.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Melengestrol is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Melengestrol (CAS 5633-18-1), a certified reference material (molecular formula C23H30O3, MW 354.48 g/mol) for analytical method development and quality control.
Based on its molecular formula C23H30O3, Melengestrol contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 354.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C23H30O3 |
| Molecular Weight | 354.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Melengestrol Standards
Recommended Standards
- Etretinate (CAS 54350-48-0)
- Prostaglandin Impurity N2 (CAS 20897-91-0)
- Estradiol Valerate EP Impurity G (CAS 1313382-25-0)
- 11-beta-Alprostadil (Prostaglandin E1) (CAS 24570-01-2)
- 3-methoxy-N-methylspiro[3.3]heptan-1-amine hydrochloride (CAS 1909348-00-0)
- 4-Methyl-5-(2-tert-pentylpyrimidin-4-yl)thiazol-2-amine (CAS 1217487-34-7)
- Methyl 4-(3-chlorobenzyl)-1H-pyrrole-3-carboxylate (CAS 1313712-17-2)
- 2-(1-Imidazolyl)ethanamine Hydrochloride (CAS 154094-97-0)
- 2-Chloro-5-cyano-4-(difluoromethyl)nicotinoyl chloride (CAS 1805980-70-4)
- tert-Butyl 4-amino-2,2-dimethylpiperidine-1-carboxylate hydrochloride (CAS 2202948-67-0)
- Methyl 4-(4-methoxybenzoyl)-1H-pyrrole-2-carboxylate (CAS 478259-71-1)
- (2E)-4-[(3-Chlorophenyl)amino]-4-oxobut-2-enoic acid (CAS 18196-80-0)
- Indacaterol Impurity 71 (CAS CATO-C4X-150071)
- Semaglutide Main Chain P29 (CAS 1169630-82-3)
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