Sepiapterin Impurity 21 CAS 62128-61-4
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 62128-61-4 |
| Molecular Formula | C4H5N5O2 |
| Molecular Weight | 155.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Sepiapterin Impurity 21 (CAS 62128-61-4) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C4H5N5O2. Molecular weight: 155.11 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C4H5N5O2 |
| Molecular Weight | 155.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 5 |
Related Sepiapterin Standards
- Sepiapterin Impurity 6 (CAS 2387-48-6)
- Sepiapterin Impurity 9 (CAS 2236-60-4)
- Sepiapterin Impurity 2 (CAS 109901-94-2)
- Sepiapterin Impurity 10 (CAS CATO-C4X-276610)
- L-Sepiapterin (CAS 17094-01-8)
- Sepiapterin Impurity 11 (CAS 1177884-36-4)
- Sepiapterin Impurity 24-D3 (CAS 2747956-15-4)
- Sepiapterin Impurity 12 (CAS CATO-C4X-276612)
Recommended Standards
- Famotidine impurity 70 (CAS 874285-13-9)
- 5-Amino-1-nitroso-1H-pyrazole-4-carboxamide (CAS CATO-C3D-26212)
- Citrazinic Acid (CAS 99-11-6)
- Glycopyrronium Bromide Impurity 19 (CAS CATO-C4X-181719)
- Maytansinoid Impurity 14 (CAS CATO-C4X-22514)
- [(3-Methylphenyl)methyl](propan-2-yl)amine (CAS 915922-51-9)
- 3-Hydroxy-2-methyl-cyclopent-2-enone (CAS 5870-63-3)
- 3-(((5-(Isopentylcarbamoyl)-1,2,4-oxadiazol-3-yl)methyl)thio)propanoic acid (CAS 1119449-71-6)
- 3-(3-Chlorophenyl)-5,6-dimethyl-3H-pyrrolo[2,3-d]pyrimidin-4(7H)-imine (CAS 214284-98-7)
- Des-Ala18-Tirzepatide (CAS CATO-CPTD788955)
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