Valproate Impurity 70 CAS 66546-90-5
| CAS No. | 66546-90-5 |
| Molecular Formula | C11H19NO2 |
| Molecular Weight | 197.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Valproate Impurity 70 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.
CATO supplies Valproate Impurity 70 (CAS 66546-90-5), a pharmacopoeial impurity reference standard (molecular formula C11H19NO2, MW 197.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Valproate Impurity 70 (C11H19NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 197.27 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C11H19NO2 |
| Molecular Weight | 197.27 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related Valproate Standards
- Valproate Impurity 63 (CAS CATO-C4X-116663)
- Sodium Valproate Impurity 32 (CAS 109578-13-4)
- Sodium Valproate Impurity 15 (CAS 2163-48-6)
- Sodium Valproate Impurity 28 (CAS 759-36-4)
- Valproate Impurity 73 (CAS CATO-C4X-116673)
- Valproate Impurity 77 (CAS CATO-C4X-116677)
- Sodium Valproate Impurity 14 (CAS 1636-27-7)
- Sodium Valproate Impurity 44 (CAS 4441-94-5)
Recommended Standards
- tert-butyl 4-methylenepiperidine-1-carboxylate (CAS 159635-49-1)
- 1H-Pyrrole-1-carboxylic acid, 2,5-dihydro-3,4-dimethyl-, 1,1-dimethylethyl ester (CAS 496961-56-9)
- (4-Methyl-piperazin-1-yl)-(S)-pyrrolidin-2-yl-methanone (CAS 100158-68-7)
- 6-oxo-6-(piperidin-1-yl)hexanal (CAS CATO-C3D-263115)
- Tirofiban Impurity 103 (CAS CATO-C4X-1254103)
- Cefcapene Impurity 22 (CAS 118109-49-2)
- Cefovecin Impurity 6 (CAS CATO-C4X-30356)
- bis(8,8-difluoro-2-azaspiro[4.5]decane); oxalic acid (CAS 2007919-26-6)
- 7-(2,2,2-Trifluoroethyl)-6,7-dihydropyrazolo[1,5-a]pyridin-4(5H)-one (CAS 2489783-98-2)
- n,n-Diethyl-5-iodothiophene-3-carboxamide (CAS 1333648-48-8)
- trans-3-Phenylcyclobutanamine (CAS 1570-99-6)
- 4-[(3,4-Dichlorobenzyl)oxy]-3-ethoxybenzaldehyde (CAS 423148-76-9)
- Methyl 4-amino-3-(2,6-dimethylphenyl)-2-thioxo-2,3-dihydrothiazole-5-carboxylate (CAS 689772-62-1)
- Tau Peptide (74-102) (Exon 3/Insert 2 Domain) trifluoroacetate salt (CAS 1322695-34-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com