DA-302168S Impurity 3 CAS CATO-C3D-263270
| CAS No. | CATO-C3D-263270 |
| Molecular Formula | C12H13N3O3 |
| Molecular Weight | 247.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies DA-302168S Impurity 3 (CAS CATO-C3D-263270), a pharmacopoeial impurity reference standard (molecular formula C12H13N3O3, MW 247.25 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C12H13N3O3, DA-302168S Impurity 3 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C12H13N3O3 |
| Molecular Weight | 247.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Recommended Standards
- tert-butyl 5-nitroso-1H-indazole-1-carboxylate (CAS CATO-C3D-26192)
- Argatroban Impurity 88 (CAS CATO-C4X-100788)
- 2-Pentenedioic acid, 4-[(phenylamino)methylene]-, 5-methyl ester 64972-00-5 CTK1I3774 (CAS 64972-00-5)
- Tadalafil Impurity 120 (CAS CATO-C4X-1087120)
- Cimetidine EP Impurity C Dihydrochloride (CAS 52568-80-6)
- Ampicillin Impurity 51 (CAS CATO-C4X-144351)
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- 2,2-Difluoro-N-phenyl-2-(3-(trifluoromethyl)phenoxy)acetamide (CAS 338791-99-4)
- 7-(Trifluoromethoxy)-1,2,3,4-tetrahydroquinoline (CAS 1892955-23-5)
- 4-(Aminomethyl)-2-cyano-3-fluorobenzene-1-sulfonyl chloride (CAS 1805402-24-7)
- 4-Benzylbenzo[d]thiazol-2-amine (CAS 1152504-14-7)
- N-isobutyl-N-(4-methylthiazole-5-carbonyl)glycine (CAS 1410101-99-3)
- Pioglitazone N-beta-D-Glucuronide (Mixture of Diastereomers) (CAS 1296832-75-1)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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