Folic Acid Impurity 34 CAS 71963-69-4
| CAS No. | 71963-69-4 |
| Molecular Formula | C19H23N7O6 |
| Molecular Weight | 445.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Folic Acid Impurity 34 (CAS 71963-69-4), a pharmacopoeial impurity reference standard (molecular formula C19H23N7O6, MW 445.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Folic Acid Impurity 34 (C19H23N7O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 445.43 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H23N7O6 |
| Molecular Weight | 445.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 7 |
Related Folic Standards
- Folic Acid-d4 (CAS 171777-72-3)
- Folic Acid-13C5 (CAS 1207282-75-4)
- Folic Acid Impurity 52 (CAS CATO-C4X-139552)
- Folic Acid Impurity 55 (CAS CATO-C4X-139555)
- Folic Acid-13C5, 15N (CAS CATO-CCFD202167)
- Folic Acid Impurity 72 (CAS CATO-C4X-139572)
- Folic Acid Impurity 14 (CAS 4033-27-6)
- Folic Acid-d2 (CAS 69022-87-3)
Recommended Standards
- Chlorphenamine impurity 51 (CAS CATO-C4X-118851)
- L-Tetrahydrofolic acid (CAS 135-16-0)
- BPTU (CAS 870544-59-5)
- N-(2,4-Dimethoxybenzyl)-2,4,5-trifluoro-N-(1,2,4-thiadiazol-5-yl)benzenesulfonamide, 97% (CAS 1235406-89-9)
- Rimegepant Impurity 128 (CAS CATO-C4X-2487128)
- Dabigatran Impurity 86 (CAS 18358-63-9)
- Clindamycin Impurity 155 (CAS CATO-C4X-1341155)
- Calcium 2,2,6,6-tetramethyl-3,5-dioxoheptan-4-ide (CAS 36818-89-0)
- 2-(2-Chlorophenoxy)-4-methylaniline (CAS 946728-82-1)
- 3-Methyl-2-oxoimidazolidine-1-carbonyl chloride (CAS 57451-84-0)
- 302912-17-0 (1-~13~C)Tetracosanoic acid DTXSID40584071 (CAS 302912-17-0)
- Metoclopramide Impurity 117 (CAS CATO-C4X-1415117)
- 4-Bromo-3-chloro-2-fluorophenylisothiocyanate (CAS 886501-37-7)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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