Spironolactone Impurity 20 CAS CATO-C4X-134520
| CAS No. | CATO-C4X-134520 |
| Molecular Formula | C25H34O6 |
| Molecular Weight | 430.53 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 Spironolactone Impurity 20.
CATO supplies Spironolactone Impurity 20 (CAS CATO-C4X-134520), a pharmacopoeial impurity reference standard (molecular formula C25H34O6, MW 430.53 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H34O6, Spironolactone Impurity 20 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 430.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Spironolactone Impurity 20 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 | C25H34O6 |
| Molecular Weight | 430.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Spironolactone Standards
- Spironolactone EP Impurity G (CAS 880106-10-5)
- Spironolactone-d7(Major) (CAS CATO-CCAD302541)
- Spironolactone EP Impurity I (CAS CATO-C4X-13459)
- Spironolactone D3 (CAS 52-01-7 (Unlabeled))
- Spironolactone EP Impurity E (CAS 33784-05-3)
- Spironolactone (CAS 52-01-7)
- Spironolactone EP Impurity A (CAS 132458-33-4)
- Spironolactone Impurity 14 (CAS 53866-20-9)
Recommended Standards
- N-Nitroso Mirabegron d5 (CAS CATO-C4X-1032131)
- Budesonide Impurity 29 (CAS 51372-28-2)
- 11-alpha-Hydroxy-4-pregnene-3,20-dione 11-hemisuccinate 4-((8S,9S,10R,11R,13S,14S,17S)-17-acetyl-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-11-yloxy)-4-oxobutanoic acid 41238-98-6 (CAS 41238-98-6)
- Budesonide EP Impurity C (CAS 1040085-99-1)
- Pomalidomide Impurity 34 Triethylamine Salt (CAS CATO-C4X-135434)
- Cholesterol Impurity 36 (CAS 7199-91-9)
- Afatinib Impurity 71 (CAS CATO-C4X-100671)
- alfa-Costic acid (CAS 28399-17-9)
- 1-(4-Hydroxy-2,3-dimethoxyphenyl)ethanone (CAS 87344-56-7)
- 1-Mesityl-1H-pyrrole (CAS 881041-55-0)
- 4-Bromo-N-((5-chlorothiophen-2-yl)methyl)benzamide (CAS 1147280-61-2)
- 4-Formylphenyl 3-methylbenzoate (CAS 321725-86-4)
- 2-(Tert-butyl) 4-methyl 6-methoxy-3,4-dihydroisoquinoline-2,4(1H)-dicarboxylate (CAS 2764675-94-5)
- Semaglutide impurity 107 (CAS CATO-C4X-2226107)
Why CATO?
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