Altrenogest impurity 11 CAS CATO-C4X-248311
| CAS No. | CATO-C4X-248311 |
| Molecular Formula | C20H26O4 |
| Molecular Weight | 330.42 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 Altrenogest impurity 11.
Altrenogest impurity 11 (CAS CATO-C4X-248311) is a certified pharmaceutical impurity reference standard with the molecular formula C20H26O4 and a molecular weight of 330.42 g/mol.
Altrenogest impurity 11 (C20H26O4) contains a flavonoid 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Altrenogest impurity 11 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 | C20H26O4 |
| Molecular Weight | 330.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Altrenogest Standards
- Altrenogest impurity 16 (CAS CATO-C4X-248316)
- Altrenogest impurity 13 (CAS CATO-C4X-248313)
- Altrenogest Impurity 5 (CAS CATO-C4X-24835)
- Altrenogest impurity 12 (CAS 23760-34-1)
- Altrenogest Impurity 3 (CAS 141299-96-9)
- Altrenogest impurity 9 (CAS CATO-C4X-24839)
- Altrenogest Impurity 7 (CAS CATO-C4X-24837)
- Altrenogest Impurity 1 (CAS CATO-C4X-24831)
Recommended Standards
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- Torasemide impurity 39 (CAS CATO-C4X-183639)
- Ciclesonide Impurity 15 (CAS 161115-60-2)
- Vericiguat impurity 54 (CAS CATO-C4X-289654)
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- Cefadroxil Impurity 31 (CAS CATO-C4X-122431)
- Methyl 1-(2-bromophenyl)-1H-1,2,3-triazole-4-carboxylate (CAS 2097988-71-9)
- N-Boc-4-bromo-2-fluoroaniline (CAS 209958-42-9)
- Trilaciclib Impurity 16 (CAS CATO-C4X-304416)
- 2-Isocyano acetic acid tert-butyl ester 2769-72-4 tert-butyl 2-isocyanoacetate (CAS 2769-72-4)
- Fibrinogen Related Peptide (CAS 80755-86-8)
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