Folic Acid Impurity 35 CAS 33157-07-2
| CAS No. | 33157-07-2 |
| Molecular Formula | C20H25N7O7 |
| Molecular Weight | 475.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Folic Acid Impurity 35 (CAS 33157-07-2, C20H25N7O7) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Folic Acid Impurity 35 (C20H25N7O7) 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 475.46 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO manufactures Folic Acid Impurity 35 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 | C20H25N7O7 |
| Molecular Weight | 475.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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.) | 1966 |
| Nitrogen Atoms | 7 |
Related Folic Standards
- Folic Acid-D5 N-Nitroso (CAS CATO-C4X-139568)
- Folic Acid Impurity 56 (CAS CATO-C4X-139556)
- Folic Acid Impurity N2 (CAS 2800-34-2)
- Folic Acid Impurity 16 (CAS 68538-85-2)
- Folic Acid Impurity 23 (CAS 79573-48-1)
- Folic Acid Impurity 54 (CAS CATO-C4X-139554)
- Folic Acid Impurity 70 (CAS 2305206-68-0)
- Folic Acid Impurity 35 (CAS 2311-81-1)
Recommended Standards
- TFA-Val-Tyr-Val-OH (CAS 64577-63-5)
- 5-(((5H-[1,2,4]triazino[5,6-b]indol-3-yl)thio)methyl)-4-(4-(trifluoromethoxy)phenyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 1024559-44-1)
- 3-Benzyl-6-{[3-(3,4,5-trimethoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-3H,6H,7H-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (CAS 1040655-10-4)
- β-D-Lactopyranosylphenyl isothiocyanate (CAS 96324-93-5)
- Cyanocobalamin EP Impurity A (CAS 23208-66-4)
- Polymyxin Impurity 28 (CAS CATO-C4X-225528)
- Tenofovir Impurity 83 (CAS CATO-C4X-107683)
- 1,2,3-Benzoxathiazine, 6-chloro-, 2,2-dioxide (CAS 78224-92-7)
- 6-Bromo-2,4-pteridinediamine (CAS 16760-61-5)
- N1-(2-(dimethylamino)ethyl)-N1-(thiophen-2-ylmethyl)propane-1,3-diamine (CAS 1243075-23-1)
- 1-(3-Chloro-2-methylphenyl)-1H-pyrrole (CAS 83140-95-8)
- Anisole-d8 (CAS 54887-54-6)
- 4-(2-Amino-1-(3,4-dihydroisoquinolin-2(1h)-yl)ethyl)-N,N-dimethylaniline (CAS 954578-77-9)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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