6alpha-Chloro-17-acetoxy Progesterone CAS 2477-73-8
| CAS No. | 2477-73-8 |
| Molecular Formula | C23H31ClO4 |
| Molecular Weight | 406.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6alpha-Chloro-17-acetoxy Progesterone (CAS 2477-73-8), molecular formula C23H31ClO4 and molecular weight 406.94 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution, 6alpha-Chloro-17-acetoxy Progesterone is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 406.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 6alpha-Chloro-17-acetoxy Progesterone 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 | C23H31ClO4 |
| Molecular Weight | 406.94 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; 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 alpha Standards
- N-(2-Chloro-4,6-dimethylphenyl)-2-((4-ethyl-5-(thiophen-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 577769-92-7)
- 1439824-03-9 4-(2-Chloro-6-((1-(cyclopropylmethyl)piperidin-4-yl)methyl)thieno[3,2-d]pyrimidin-4-yl)morpholine ST24042845 (CAS 1439824-03-9)
- 4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-N-cyclohexylpiperazine-1-carbothioamide (CAS 1023518-69-5)
- 4-(4-((4'-chloro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoic acid (CAS 916204-05-2)
- N-(4-Chloro-2-methoxy-5-methylphenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 586999-85-1)
- 3-(4-((2-Chloro-6-fluorobenzyl)oxy)phenyl)-1-(4-methylbenzyl)-1H-pyrazole (CAS 477711-63-0)
- (2E)-3-[(4-Chloro-2-methylphenyl)amino]-1-[3-(3-fluorophenyl)-2,1-benzoxazol-5-yl]prop-2-en-1-one (CAS 383147-96-4)
- (3-(4-((2-Chloro-6-fluorobenzyl)oxy)phenyl)-1H-pyrazol-1-yl)(phenyl)methanone (CAS 477711-03-8)
Recommended Standards
- (3S,8R,9S,10R,13S,14S,17R)-17-Acetyl-6-chloro-3-hydroxy-10,13-dimethyl-2,3,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate (CAS 3114-44-1)
- Chlormadinone Acetate EP Impurity L (CAS 2658-74-4)
- 3-Hydroxy Chlormadinone Acetate (CAS 17184-15-5)
- Hydromadinone Acetate (CAS 33125-90-5)
- (5-(2,5-Difluorophenyl)pyridin-3-yl)methanamine (CAS 1346692-25-8)
- 3-(Dibenzylamino)propanoic acid (CAS 19812-58-9)
- (9H-fluoren-9-yl)methyl (S)-(3-(tert-butoxy)-2-(hydroxymethyl)propyl)carbamate (CAS 1801871-51-1)
- 6-Bromo-1-naphthoic Acid (CAS 51934-38-4)
- 2-Chloro-4-methyloxazole-5-carboxamide (CAS 1823876-58-9)
- (R)-1-(2-Morpholinophenyl)ethan-1-amine (CAS 1212879-51-0)
- 4-Ethoxycarbonyl-2-methylphenylisothiocyanate (CAS 1027513-17-2)
- N-cyclopropylthiazole-4-carboxamide (CAS 1341512-03-5)
- 5-Amino-n-(4-fluorophenyl)-1-phenyl-1h-pyrazole-4-carboxamide (CAS 1015869-64-3)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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