Dipyridamole EP Impurity C CAS 54093-92-4
| CAS No. | 54093-92-4 |
| Molecular Formula | C20H30ClN7O2 |
| Molecular Weight | 435.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dipyridamole EP Impurity C (CAS 54093-92-4), a pharmacopoeial impurity reference standard (molecular formula C20H30ClN7O2, MW 435.95 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Dipyridamole EP Impurity C is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 435.95 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H30ClN7O2 |
| Molecular Weight | 435.95 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 7 |
Related Dipyridamole Standards
- Dipyridamole Tartaric Acid Mono Ester (CAS 68006-07-5)
- Dipyridamole Impurity 8 (CAS CATO-C4X-16188)
- Dipyridamole EP Impurity D (CAS 1176886-12-6)
- Dipyridamole EP Impurity F (CAS 60286-30-8)
- Dipyridamole EP Impurity A (CAS 16982-40-4)
- Dipyridamole EP Impurity G (CAS 7139-02-8)
- Dipyridamole (CAS 58-32-2)
- Dipyridamole EP Impurity E (CAS 2365420-11-5)
Recommended Standards
- 5-((4-Chlorophenyl)sulfonyl)-4-((3-methoxyphenyl)thio)-N,N-dimethylpyrimidin-2-amine (CAS 478080-93-2)
- tert-Butyl 1-(5-(1,3-dioxolan-2-yl)-2-methylthiophen-3-yl)-7-chloro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 1858275-14-5)
- 2-(4-Chlorobenzenesulfonyl)-4,6-dimethyl-3-(4-methylbenzenesulfonyl)pyridine (CAS 478245-48-6)
- Ethyl 4-((4-chlorophenyl)sulfonyl)-1-(4-methylbenzyl)piperidine-4-carboxylate (CAS 866150-05-2)
- Evocalcet Impurity 47 (CAS CATO-C4X-248547)
- Spironolactone EP Impurity D (CAS 3079028-52-4)
- Cinacalcet Impurity 68 (CAS CATO-C4X-105968)
- Alpha-Isomethylionone (CAS 127-51-5)
- 1-Benzhydryl-4-((4-isopropoxyphenyl)sulfonyl)piperazine (CAS 1024523-03-2)
- (1-(3-Bromophenyl)cyclopropyl)methanamine hydrochloride (CAS 1211373-43-1)
- 4-(4-[2,2']Bithiophenyl-5-yl-5-cyano-6-oxo-1,6-dihydro-pyrimidin-2-ylsulfanylmethyl)-N-[2-(1H-indol-3-yl)-ethyl]-benzenesulfonamide (CAS 1418273-66-1)
- Bazedoxifene Acetate Impurity 9 (CAS 104599-10-2)
- 4-(Cyclohexyloxy)-2-ethylphenol (CAS 1243389-22-1)
- [Ser]8-Acetylated Semaglutide (CAS CATO-C4X-2226218)
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