L-Tetrahydrofolic acid CAS 135-16-0
Purity >95%In StockPharmaceutical Standards
| CAS No. | 135-16-0 |
| Molecular Formula | C19H23N7O6 |
| Molecular Weight | 445.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-Tetrahydrofolic acid (CAS 135-16-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C19H23N7O6. Molecular weight: 445.43 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C19H23N7O6 |
| Molecular Weight | 445.43 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.) | 1957 |
| Nitrogen Atoms | 7 |
Related L Standards
Recommended Standards
- Folic Acid Impurity 34 (CAS 71963-69-4)
- N-(2,4-Dimethoxybenzyl)-2,4,5-trifluoro-N-(1,2,4-thiadiazol-5-yl)benzenesulfonamide, 97% (CAS 1235406-89-9)
- Chlorphenamine impurity 51 (CAS CATO-C4X-118851)
- 5,6-Dihydroquinolin-5-ol (CAS 160240-11-9)
- Fexofenadine-d10 HCl (CAS 1215821-44-5)
- 2-(2-Fluoro-5-nitro-3-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2096336-43-3)
- Biotin Impurity 37 (CAS CATO-C4X-156337)
- 5-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1,3,4-oxadiazol-2-amine (CAS 1039933-90-8)
- 4-(Naphthalen-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (CAS 16152-10-6)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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 13829788188 / jacky.chen@cato-chem.com