Vinpocetine Impurity 33 CAS 4752-37-8
| CAS No. | 4752-37-8 |
| Molecular Formula | C22H28N2O4 |
| Molecular Weight | 384.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Vinpocetine Impurity 33 (CAS 4752-37-8), a pharmacopoeial impurity reference standard (molecular formula C22H28N2O4, MW 384.47 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Vinpocetine Impurity 33 (C22H28N2O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Vinpocetine Impurity 33 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 | C22H28N2O4 |
| Molecular Weight | 384.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Vinpocetine Standards
- Vinpocetine Impurity 24 (CAS 52341-36-3)
- Vinpocetine EP Impurity C (CAS 70155-05-4)
- Vinpocetine Impurity 34 (CAS CATO-C4X-184334)
- Vinpocetine Impurity 35 (CAS CATO-C4X-184335)
- Vinpocetine Impurity 21 (CAS 77549-92-9)
- Vinpocetine Impurity 26 (CAS CATO-C4X-184326)
- Vinpocetine Impurity 44 (CAS 68780-78-9)
- Vinpocetine EP Impurity A (CAS 40163-56-2)
Recommended Standards
- Vincamine EP Impurity A (CAS 57430-34-9)
- Atracurium impurity 103 (CAS 872807-64-2)
- Peramivir Impurity 84 (CAS CATO-C4X-183384)
- Atracurium Impurity 105 (CAS CATO-C4X-1850105)
- Vericiguat Impurity 7 (CAS CATO-C4X-28967)
- Verapamil Hydrochloride EP Impurity E (CAS 93-03-8)
- Ramipril EP Impurity D (CAS 108731-95-9)
- Ceftolozane Impurity 13 (CAS CATO-C4X-240613)
- 5-(tert-Butoxycarbonyl)-1-methyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine-3-carboxylic acid (CAS 1306739-66-1)
- Cortistatin-29 (rat) (CAS 1815618-17-7)
- 2-((5-(4-Hydroxyphenyl)-1,3,4-oxadiazol-2-yl)thio)-N,N-diphenylacetamide (CAS 332906-50-0)
- tert-Butyl (3-bromo-5-fluoropyridin-2-yl)carbamate (CAS 1666113-03-6)
- 1,5-Bis(2-hydroxyphenyl)penta-1,4-dien-3-one (CAS 2150-52-9)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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