Albendazole Impurity 23 CAS 21729-98-6
| CAS No. | 21729-98-6 |
| Molecular Formula | C3H4N2O2 |
| Molecular Weight | 100.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Albendazole Impurity 23 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 Albendazole Impurity 23 (CAS 21729-98-6), a pharmacopoeial impurity reference standard (molecular formula C3H4N2O2, MW 100.08 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Albendazole Impurity 23 (C3H4N2O2) is characterized by an amino-acid-derived structure, 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.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C3H4N2O2 |
| Molecular Weight | 100.08 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Related Albendazole Standards
- Albendazole impurity 36 (CAS CATO-C4X-153536)
- Albendazole Impurity N14 (Calcium Cyanamide) (CAS 156-62-7)
- Albendazole Impurity 17 (CAS 51234-98-1)
- Albendazole Impurity 16 (CAS 51276-85-8)
- Albendazole Impurity 15 (CAS 1805694-08-9)
- Albendazole Impurity 5 DlHCl (CAS 2089381-52-0)
- Albendazole Impurity 16 (CAS 66608-52-4)
- Albendazole Impurity 22 (CAS 31431-10-4)
Recommended Standards
- Fluconazole Impurity 62 (CAS CATO-C4X-101962)
- 6832-16-2 2-Diazonio-1-methoxyethen-1-olate DTXSID20700979 (CAS 6832-16-2)
- Hydantoin (CAS 461-72-3)
- 32807-36-6 (~15~N)Pyrrolidine-2,5-dione DTXSID80583982 (CAS 32807-36-6)
- Eldecalcitol Impurity 31 (CAS CATO-C4X-214031)
- Relebactam Impurity 92 (CAS 2649642-53-3)
- Amlodipine Impurity 107 (CAS CATO-C4X-1095107)
- Ammonium decanoate (CAS 16530-70-4)
- 3-Amino-4-(4-methyl-2-nitrophenyl)isoxazol-5(2H)-one (CAS 160292-74-0)
- 4-(Chloromethyl)-2,5-dimethyl-1H-imidazole hydrochloride (CAS 76238-20-5)
- 4-Amino-2-(methylsulfonyl)pyrimidine-5-carbonitrile (CAS 98198-13-1)
- Ilaprazole Impurity 146 (CAS CATO-C4X-1130146)
- N-[5-(2-Furanyl)-1,3,4-oxadiazol-2-yl]-2-phenyl-4-quinolinecarboxamide (CAS 851095-32-4)
- Casein kinase II peptide Substrate (CAS 154444-98-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com