Valproate impurity 87 CAS 59726-37-3
| CAS No. | 59726-37-3 |
| Molecular Formula | C12H20O4 |
| Molecular Weight | 228.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Valproate impurity 87 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 228.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Valproate impurity 87 (CAS 59726-37-3) is a certified pharmaceutical impurity reference standard with the molecular formula C12H20O4 and a molecular weight of 228.28 g/mol.
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), Valproate impurity 87 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 | C12H20O4 |
| Molecular Weight | 228.28 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
Related Valproate Standards
- Valproate Impurity 36 (CAS 6065-62-9)
- Valproate Impurity 64 (CAS CATO-C4X-116664)
- Valproate Impurity 86 (CAS CATO-C4X-116686)
- Valproate Impurity 38 (CAS 55898-43-6)
- Sodium Valproate Impurity 42 (CAS 258264-00-5)
- Valproate Impurity 84 (CAS CATO-C4X-116684)
- Valproate Impurity 96 (CAS CATO-C4X-116696)
- Valproate Impurity 82 (CAS CATO-C4X-116682)
Recommended Standards
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- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(2-methoxyphenyl)propanoic acid (CAS 206060-41-5)
- (2S)-morpholine-2-carbonitrile;hydrochloride (CAS 1417789-39-9)
- 4-Hydroxy-6-methyl-3-nitro-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione (CAS 161185-52-0)
- 1-Allyl-3,5-dimethyl-1H-pyrazole-4-carbaldehyde (CAS 1155595-91-7)
- Anti-infective drugs Mix 34 (CAS CATO-MCAD303453-ME)
- Semaglutide impurity 203 (CAS CATO-C4X-2226203)
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