5A-methyl-2-phenyl-5,5a,7,8-tetrahydronaphtho[2,1-b]furan-6(4H)-one CAS 30036-89-6
| CAS No. | 30036-89-6 |
| Molecular Formula | C19H18O2 |
| Molecular Weight | 278.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5A-methyl-2-phenyl-5,5a,7,8-tetrahydronaphtho[2,1-b]furan-6(4H)-one (CAS 30036-89-6), molecular formula C19H18O2 and molecular weight 278.35 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5A-methyl-2-phenyl-5,5a,7,8-tetrahydronaphtho[2,1-b]furan-6(4H)-one (C19H18O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 278.35 g/mol, it falls into the medium-molecular-weight range. 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 | C19H18O2 |
| Molecular Weight | 278.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
Recommended Standards
- 5-(4-Cyclohexylphenyl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 865658-22-6)
- 6-(4-Benzylpiperazin-1-yl)nicotinonitrile (CAS 941154-42-3)
- 5-(2-(4-Aminophenyl)propan-2-yl)quinolin-8-ol (CAS 57150-14-8)
- 6-Amino-N-((1-ethylpyrrolidin-2-yl)methyl)-4-methoxynicotinamide (CAS 84332-04-7)
- TERT-BUTYL 4-(N-METHYLBENZAMIDO)PIPERIDINE-1-CARBOXYLATE (CAS 1383342-71-9)
- 2-Butynedioic acid, diethyl ester 762-21-0 Acetylenedicarboxylic acid, diethyl ester Bis-(Ethoxycarbonyl)acetylene Di-Ethyl acetylenedicarboxylate Diethyl acetylene dicarboxylate Diethyl acetylenedicarboxylate NSC-67975 NSC67975 WLN: 2OV1UU1VO2 (CAS 762-21-0)
- 1,2,4-Trimethylcyclopentadienyl zirconiumtrichloride (CAS 188020-78-2)
- 1-(6-Aminohexyl)pyrrole-2,5-dione Trifluoroacetate (CAS 731862-92-3)
- N'-acetylpicolinohydrazide (CAS 17433-31-7)
- Febuxostat Impurity 14 (CAS 1350352-70-3)
- 3-(1-(2-Nitrophenyl)-1H-pyrazol-5-yl)pyridine (CAS 1269293-33-5)
- 2-(4-((Isopropyl(methyl)amino)methyl)piperidin-1-yl)acetic acid (CAS 1353966-48-9)
- 2-(4-Oxo-3,4-dihydrophthalazin-1-yl)-N-(4-phenylthiazol-2-yl)acetamide (CAS 848833-24-9)
- Des-Leu14-Tirzepatide (CAS CATO-CPTD788959)
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