Cladribine EP Impurity C CAS 1839-18-5
| CAS No. | 1839-18-5 |
| Molecular Formula | C5H4ClN5 |
| Molecular Weight | 169.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cladribine EP Impurity C (CAS 1839-18-5), a pharmacopoeial impurity reference standard (molecular formula C5H4ClN5, MW 169.57 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cladribine EP Impurity C (C5H4ClN5) contains a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 169.57 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 manufactures Cladribine EP Impurity C 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 | C5H4ClN5 |
| Molecular Weight | 169.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Cladribine Standards
Recommended Standards
- Tofacitinib Impurity 220 (CAS 1279816-72-6)
- Clofarabine Impurity 7 (CAS 10310-21-1)
- Tofacitinib Impurity 140 (CAS CATO-C4X-1079140)
- Chlorzoxazone (CAS 95-25-0)
- Norepinephrine Impurity 53 HCl (CAS 490-90-4（free base）)
- Quinapril EP Impurity E (CAS 2055735-09-4)
- Amlodipine Impurity 120 (CAS CATO-C4X-1095120)
- 2-Cyano-4-methyl-2-pentenoic Acid (CAS 760-58-7)
- 3,5-Difluoro-4-(trifluoromethyl)benzodifluoride (CAS 1803809-89-3)
- 2,5-Dioxooxazolidine-4-carbaldehyde (CAS 119941-35-4)
- Tert-butyl 4-(3-bromo-2-oxopropyl)piperidine-1-carboxylate (CAS 473795-43-6)
- 4-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1h-pyrazole (CAS 133560-58-4)
- tert-Butyl N-(2-azidoethyl)carbamate (CAS 117861-38-8)
- Fragment-[3-31]-Semaglutide (CAS CATO-C4X-2226113)
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