Teprenone Impurity 1 CAS 158734-06-6
| CAS No. | 158734-06-6 |
| Molecular Formula | C23H40O |
| Molecular Weight | 332.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Teprenone Impurity 1 (C23H40O) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 332.56 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a process- or degradation-related impurity, Teprenone Impurity 1 (CAS 158734-06-6, C23H40O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C23H40O |
| Molecular Weight | 332.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
Related Teprenone Standards
- Teprenone Impurity 2 (CAS 109826-68-8)
- Teprenone [mixture of (5E,9E,13E)- and (5Z,9E,13E)- isomers] (CAS 6809-52-5)
- Teprenone Impurity 24 (CAS CATO-C4X-208124)
- Teprenone Impurity 25 (CAS CATO-C4X-208125)
- Teprenone Impurity 26 (CAS CATO-C4X-208126)
- Teprenone impurity 34 (CAS CATO-C4X-208134)
- Teprenone impurity 35 (CAS CATO-C4X-208135)
- Teprenone impurity 36 (CAS CATO-C4X-208136)
Recommended Standards
- Isonox® 232 (CAS 4306-88-1)
- 2-Bromo-8-(3-chloro-5-fluorophenyl)-5,6-dihydro-8H-[1,2,4]triazolo[5,1-c][1,4]oxazine (CAS 2412990-81-7)
- (9E,13E)-Teprenone (CAS 1219459-06-9)
- 2-Bromo-7-(3-chloro-5-fluorophenoxy)-6,7-dihydro-5H-pyrrolo[1,2-b][1,2,4]triazole (CAS 2443488-05-7)
- Prasugrel Impurity 17 (CAS 109904-25-8)
- Eplerenone Impurity 17 (CAS CATO-C4X-163017)
- Moxifloxacin impurity 180 (CAS 151213-45-5)
- 7-Benzylidene-5-methyl-3-phenyl-2-propyl-3,3a,4,5,6,7-hexahydro-2H-pyrazolo[4,3-c]pyridine phosphate (CAS 69194-32-7)
- 4-(Prop-2-en-1-yl)oxan-4-ol (CAS 219903-85-2)
- 3-Phenyl-1H-pyrrolo[2,3-b]pyridine-4-carbonitrile (CAS 1261726-85-5)
- 2-Chloro-6-methyl-4-(3-(trifluoromethyl)phenyl)pyridine (CAS 1261814-39-4)
- 2-(3-Cyano-4-ethoxy-5-hydroxy-5-(trifluoromethyl)-1,5-dihydro-2H-pyrrol-2-ylidene)malononitrile (CAS 477846-23-4)
- N1-Isobutyl-N2-(2-(1-methyl-1,2,3,4-tetrahydroquinolin-6-yl)ethyl)oxalamide (CAS 946363-23-1)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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