Oxonic Acid Impurity 2 CAS 71-33-0
| CAS No. | 71-33-0 |
| Molecular Formula | C3H3N3O2 |
| Molecular Weight | 113.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Oxonic Acid Impurity 2.
As a process- or degradation-related impurity, Oxonic Acid Impurity 2 (CAS 71-33-0, C3H3N3O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Oxonic Acid Impurity 2 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 113.07 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.
CATO manufactures Oxonic Acid Impurity 2 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 | C3H3N3O2 |
| Molecular Weight | 113.07 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Oxonic Standards
Recommended Standards
- Ribavirin Impurity 40 (CAS 39215-01-5)
- Ribavirin EP Impurity C (CAS 4928-87-4)
- 2-Nitroimidazole (CAS 527-73-1)
- Metronidazole EP Impurity B (CAS 3034-38-6)
- Azelastine Impurity 67 (CAS CATO-C4X-139667)
- Arbidol Impurity 42 (CAS 153633-14-8)
- Arotinolol impurity 24 (CAS CATO-C4X-185424)
- 4-(Methylthio)pyrimidin-2-ol (CAS 129618-62-8)
- N-ALlyl-2-(phenylacetyl)hydrazinecarbothioamide (CAS 15814-11-6)
- Methyl 4-isobutyl-2-methyl-1H-imidazole-5-carboxylate (CAS 1150617-77-8)
- 2-Methoxy-N-(5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)benzamide (CAS 922130-11-8)
- Tert-butyl (R)-3-phenylpyrrolidine-1-carboxylate (CAS 145549-11-7)
- 2-(tert-Butyl)piperidin-4-one hydrochloride (CAS 1245648-49-0)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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