(11 β,16 β)-11-Hydroxy-16-methyl-17,21-bis(1-oxopropoxy)-pregna-1,4-diene-3,20-dione CAS 71934-47-9
| CAS No. | 71934-47-9 |
| Molecular Formula | C28H38O7 |
| Molecular Weight | 486.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (11 β,16 β)-11-Hydroxy-16-methyl-17,21-bis(1-oxopropoxy)-pregna-1,4-diene-3,20-dione 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.
(11 β,16 β)-11-Hydroxy-16-methyl-17,21-bis(1-oxopropoxy)-pregna-1,4-diene-3,20-dione (CAS 71934-47-9) is a high-purity analytical reference standard with the molecular formula C28H38O7 and a molecular weight of 486.60 g/mol.
The molecular framework of (11 β,16 β)-11-Hydroxy-16-methyl-17,21-bis(1-oxopropoxy)-pregna-1,4-diene-3,20-dione (C28H38O7) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H38O7 |
| Molecular Weight | 486.60 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Related Hydroxy Standards
- 6β-Hydroxy 21-Acetyloxy Budesonide (CAS 93789-69-6)
- 1-((S)-2-hydroxy-1-phenylethyl)-3-((S)-(6-methoxyquinolin-4-yl)((1S,2S,4S,5R)-5-vinylquinuclidin-2-yl)methyl)urea (CAS 1639930-41-8)
- 3-Hydroxy-12-oleanene-23,28-dioic acid (CAS 226562-47-6)
- 3-(5-Hydroxy-1H-indol-3-yl)-2-(2-((6-oxo-6H-benzo[c]chromen-3-yl)oxy)propanamido)propanoic acid (CAS 1214864-54-6)
- Bis(3-hydroxy-2,3-dimethylbutan-2-yl) (2'-methoxy-4'-ureido-[1,1'-biphenyl]-2-yl)boronate (CAS 1669414-60-1)
- 3-Hydroxy-4-[methyl(nitros)amino]butanoic Acid (CAS 77382-78-6)
- (2S)-1-[[2-Hydroxy-3-(trifluoromethyl)phenyl]methyl]-α,α-bis(4-methoxyphenyl)-2-pyrrolidinemethanol (CAS 1429648-16-7)
- Hydroxy Ebastine (CAS 210686-41-2)
Recommended Standards
- (4<I>R</I>,4′<I>R</I>,5<I>R</I>,5′<I>R</I>)-2,2′-( 1-methylethylidene)bis[4,5-dihydro-4,5-diphenyl)oxazole (CAS 183072-30-2)
- (8α,9R)-9-(9-Phenanthrenyloxy)cinchonan-6'-ol (CAS 844657-46-1)
- methyl 1-(N6-(tert-butoxycarbonyl)-D-lysyl)-4-((tert-butoxycarbonyl)amino)piperidine-4-carboxylate (CAS 1821319-24-7)
- (9S)-9-(9-Phenanthrenyloxy)cinchonan-6'-ol (CAS 761434-36-0)
- 4-{[4-(dimethylamino)phenyl]methylidene}-1,2,3,4-tetrahydroacridine-9-carboxylic acid (CAS 379728-16-2)
- 1-Methyl-3-pentyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide (CAS 280779-53-5)
- ISODRIN (CAS 465-73-6)
- (2R,4R)-2-Methyltetrahydro-2H-pyran-4-amine hydrochloride (CAS 2752128-01-9)
- N-(3-Iodophenyl)-1,1-dimethylethyl Ester Carbamic Acid (CAS 143390-49-2)
- tert-Butyl N-[(3S)-1-acetylpyrrolidin-3-yl]carbamate (CAS 1013920-62-1)
- (2R,4R)-4-((tert-butyldiphenylsilyl)oxy)pyrrolidine-2-carboxylic acid (CAS 866327-21-1)
- 1-((2,2,2-Trifluoroethoxy)methyl)-1h-pyrazol-4-amine (CAS 1004643-33-7)
- 1-(Dimethylamino)propan-2-yl 4-acetamidobenzoate (CAS 34411-88-6)
- Hexapeptide-9 (CAS 1228371-11-6)
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