Levonorgestrel EP Impurity Q CAS 14507-49-4
| CAS No. | 14507-49-4 |
| Molecular Formula | C20H30O2 |
| Molecular Weight | 302.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Levonorgestrel EP Impurity Q.
CATO supplies Levonorgestrel EP Impurity Q (CAS 14507-49-4), a pharmacopoeial impurity reference standard (molecular formula C20H30O2, MW 302.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Levonorgestrel EP Impurity Q (C20H30O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C20H30O2 |
| Molecular Weight | 302.45 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
Related Levonorgestrel Standards
- Levonorgestrel EP Impurity R (CAS 2322-77-2)
- Levonorgestrel EP Impurity D (CAS 32419-58-2)
- Levonorgestrel Impurity N1 (CAS 7443-72-3)
- Levonorgestrel Impurity 4 (Ethylmetrienone) (CAS 848-04-4)
- Levonorgestrel EP Impurity W (CAS 155683-59-3)
- Levonorgestrel Impurity 33 (CAS 93798-38-0)
- Levonorgestrel EP Impurity A (CAS 1260525-53-8)
- Levonorgestrel EP Impurity M (CAS 51087-61-7)
Recommended Standards
- (3alpha,5beta,9beta,10alpha)-3-hydroxypimara-8(14),15-dien-7-one 3alpha,7-oxo-ent-sandaracopimaradiene 3alpha-ent-sandaracopimaradien-7-one 85394-31-6 CHEBI:78258 oryzalexin A (CAS 85394-31-6)
- 5,6-monoepoxy Vitamin A (CAS 512-39-0)
- 6073C2A77I 79-54-9 Levopimaric acid 1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,4b,5,9,10,10a-decahydro-1,4a-dimethyl-7-(1-methylethyl)-, (1theta-(1alpha,4abeta,4balpha,10aalpha))- Podocarpa-8(14),12-dien-15-oic acid, 13-isopropyl- (8CI) 1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,4b,5,9,10,10a-decahydro-1,4a-dimethyl-7-(1-methylethyl)-, (1R-(1alpha,4abeta, 4balpha,10aalpha))- delta6,8(14)-Abietadienoic acid NSC 4827 beta-Pimaric acid l-Pimaric acid l-Sapietic acid UNII-6073C2A77I (CAS 79-54-9)
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- 4-Bromo-1-(pyrimidin-2-yl)-1H-pyrazol-5-amine (CAS 1542113-05-2)
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- 2-Amino-4,5-difluoro-n-methylbenzamide (CAS 1042434-87-6)
- 1-(2-(6-Morpholinopyridin-3-yl)piperidin-1-yl)ethanone (CAS 1352502-17-0)
- Tirzepatide Impurity 1 (CAS 2460751-66-8)
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