Menaquinone impurity 19 CAS 65061-22-5
| CAS No. | 65061-22-5 |
| Molecular Formula | C31H40O3 |
| Molecular Weight | 460.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Menaquinone impurity 19 (CAS 65061-22-5), a pharmacopoeial impurity reference standard (molecular formula C31H40O3, MW 460.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Menaquinone impurity 19 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 460.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO manufactures Menaquinone impurity 19 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C31H40O3 |
| Molecular Weight | 460.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
Related Menaquinone Standards
- Menaquinone impurity 25 (CAS CATO-C4X-207625)
- Menaquinone impurity 26 (CAS CATO-C4X-207626)
- Menaquinone impurity 36 (CAS CATO-C4X-207636)
- Menaquinone impurity 37 (CAS CATO-C4X-207637)
- Menaquinone impurity 39 (CAS CATO-C4X-207639)
- Menaquinone Impurity 4 (CAS 72908-86-2)
- Menaquinone Impurity 50 (CAS CATO-C4X-207650)
- Menaquinone Impurity 52 (CAS CATO-C4X-207652)
Recommended Standards
- Rocuronium Impurity 37 (CAS 13492-57-4)
- Eicosapentaenoyl Serotonin (CAS 199875-71-3)
- Acetic acid-4-hydroxy-2-methyl-5-((E)-nonadec-14-enyl)-3,6-dioxo-cyclohexa-1,4-dienyl ester (CAS 887594-38-9)
- 6,6'-((2-Hydroxy-5-methyl-1,3-phenylene)bis(methylene))bis(2-(tert-butyl)-4-methylphenol) (CAS 90-68-6)
- Haloperidol Impurity 16 (CAS 40807-61-2)
- Olaparib Impurity 27 (CAS 1759-53-1)
- Loteprednol Impurity 7 (CAS CATO-C4X-19577)
- 2,4,4-trimethylpyrrolidine hydrochloride (CAS 700378-26-3)
- (R)-5-(difluoromethyl)-6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-2-carboxylic acid (CAS 2413410-04-3)
- 5-Chloroquinazoline-2,4,6-triamine (CAS 17511-20-5)
- 3-Iodo-N,N-dimethylpyridin-4-amine (CAS 906673-15-2)
- 2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-[4-(methylthio)phenyl]ethanamine (CAS 1038385-53-3)
- Ethyl 2-(3-Methoxyphenoxy)propanoate (CAS 141289-99-8)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
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