Chlormadinone CAS 1961-77-9
| CAS No. | 1961-77-9 |
| Molecular Formula | C21H27ClO3 |
| Molecular Weight | 362.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Chlormadinone (CAS 1961-77-9), molecular formula C21H27ClO3 and molecular weight 362.89 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H27ClO3, Chlormadinone contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 362.89 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Chlormadinone under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H27ClO3 |
| Molecular Weight | 362.89 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chlormadinone Standards
- Chlormadinone Acetate EP Impurity K (CAS 425-51-4)
- Chlormadinone Acetate EP Impurity H (CAS 1054-64-4)
- Chlormadinone Acetate EP Impurity F (CAS 1172-82-3)
- Chlormadinone Acetate (CAS 302-22-7)
- Chlormadinone Acetate EP Impurity L (CAS 2658-74-4)
- Chlormadinone Acetate EP Impurity I (CAS 4809-88-5)
- Chlormadinone Acetate EP Impurity I (CAS 4203-01-4)
- Chlormadinone Acetate EP Impurity E (CAS 15251-04-4)
Recommended Standards
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- Z-Chlorolefine (CAS 97818-83-2)
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- 25-O-Acetyl-7,8-didehydrocimigenol-3-xyloside (CAS 228251-30-7)
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- 1-(3-Ethoxypropyl)-2-methyl-5-phenyl-1H-pyrrole-3-carboxylic acid (CAS 879329-78-9)
- 7-(2-Bromoethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (CAS 23146-05-6)
- Naphthalene-2,6-diamine (CAS 2243-67-6)
- 4-((3,4-Dimethoxyphenyl)sulfonyl)morpholine (CAS 313267-53-7)
- 1-((4-Fluorophenyl)sulfonyl)propan-2-one (CAS 432-98-4)
- Mirabegron EP Impurity F HCl (CAS 521284-21-9)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
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