(3R,5R,6S,7S,9R,13R,14R,E)-14-Ethyl-6-hydroxy-3,5,7,9,13-pentamethyloxacyclotetradec-11-ene-2,4,10-trione CAS 32885-75-9
| CAS No. | 32885-75-9 |
| Molecular Formula | C20H32O5 |
| Molecular Weight | 352.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (3R,5R,6S,7S,9R,13R,14R,E)-14-Ethyl-6-hydroxy-3,5,7,9,13-pentamethyloxacyclotetradec-11-ene-2,4,10-trione 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.
(3R,5R,6S,7S,9R,13R,14R,E)-14-Ethyl-6-hydroxy-3,5,7,9,13-pentamethyloxacyclotetradec-11-ene-2,4,10-trione (CAS 32885-75-9) is a high-purity analytical reference standard with the molecular formula C20H32O5 and a molecular weight of 352.47 g/mol.
Structurally, (3R,5R,6S,7S,9R,13R,14R,E)-14-Ethyl-6-hydroxy-3,5,7,9,13-pentamethyloxacyclotetradec-11-ene-2,4,10-trione (C20H32O5) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 352.47 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), (3R,5R,6S,7S,9R,13R,14R,E)-14-Ethyl-6-hydroxy-3,5,7,9,13-pentamethyloxacyclotetradec-11-ene-2,4,10-trione 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 | C20H32O5 |
| Molecular Weight | 352.47 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Recommended Standards
- (Z)-7-((1S,2R,3R,5S)-3,5-Dihydroxy-2-((E)-3-oxooct-1-en-1-yl)cyclopentyl)hept-5-enoic acid (CAS 191919-01-4)
- (4-(Tert-butyl)phenyl)(4-(2-methoxyphenyl)piperazin-1-yl)methanone (CAS 260442-74-8)
- Tert-butyl rel-(1S,3S,5R)-4'-tert-butyl-5'-oxo-spiro[8-azabicyclo[3.2.1]octane-3,2'-morpholine]-8-carboxylate (CAS 1899919-75-5)
- (5E)-2-[(2,2-Dimethoxyethyl)(methyl)amino]-5-{[4-(methylsulfanyl)phenyl]methylidene}-4,5-dihydro-1,3-thiazol-4-one (CAS 866149-70-4)
- 2-(4-Iodophenyl)-4,4,6-trimethyl-1,3,2-dioxaborinane (CAS 1279115-53-5)
- 1-(2,3-Dihydro-1h-inden-2-yl)prop-2-en-1-one (CAS 195138-52-4)
- 4-Chloro-6-(3-(trifluoromethyl)piperidin-1-yl)pyrimidine (CAS 1488892-36-9)
- Benzyl 1-benzyl-3-(2-(tert-butoxy)-2-oxoethyl)-4-methylpyrrolidine-3-carboxylate (CAS 2306262-05-3)
- 1-Methyl-5-nitro-3-(trifluoromethyl)pyridin-2(1H)-one (CAS 1879052-51-3)
- Ipragliflozin Impurity 14 (CAS CATO-C4X-188514)
- 1-(4-(Pentyloxy)phenyl)-2-(triphenylphosphoranylidene)ethanone (CAS 62179-81-1)
- 1-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-ylpiperidine (CAS 879083-09-7)
- 3-(5-Methyl-3-indolyl)-1-propanamine (CAS 586336-25-6)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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