Sepiapterin Impurity 26 CAS 13039-69-5
| CAS No. | 13039-69-5 |
| Molecular Formula | C13H18O7S |
| Molecular Weight | 318.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Sepiapterin Impurity 26 (CAS 13039-69-5), a pharmacopoeial impurity reference standard (molecular formula C13H18O7S, MW 318.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H18O7S, Sepiapterin Impurity 26 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 318.34 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).
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.
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 | C13H18O7S |
| Molecular Weight | 318.34 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Sulfur Atoms | 1 |
Related Sepiapterin Standards
- Sepiapterin impurity 16 (CAS CATO-C4X-276616)
- Sepiapterin Impurity 7 (CAS CATO-C4X-31027)
- Sepiapterin impurity 15 (CAS CATO-C4X-276615)
- Sepiapterin Impurity 12 (CAS CATO-C4X-276612)
- Sepiapterin Impurity 13 (CAS CATO-C4X-276613)
- Sepiapterin impurity 22 (CAS 1355024-07-5)
- Sepiapterin Impurity 24-D3 (CAS 2747956-15-4)
- Sepiapterin Impurity 11 (CAS 1177884-36-4)
Recommended Standards
- Landiolol Impurity 73 (CAS CATO-C4X-262173)
- Flurbiprofen 2-Glyceryl Ester (CAS 124635-86-5)
- Safinamide Impurity 3 (CAS CATO-C4X-15903)
- 6-methanesulfonyl-1-[(4-methoxyphenyl)methyl]-1H-pyrazolo[3,4-d]pyrimidine (CAS 1044139-94-7)
- Risperidone Impurity 23 (CAS 70381-58-7)
- Epinastine EP Impurity A (CAS 706753-75-5)
- Parecoxib Impurity 42 (CAS CATO-C4X-159142)
- (3H-Imidazo[4,5-c]pyridin-2-yl)methanamine dihydrochloride (CAS 2140316-34-1)
- Benzene, 1-[(3-bromopropyl)thio]-4-fluoro- (CAS 104605-77-8)
- 1-(4-(3-Methyl-1,2,4-oxadiazol-5-yl)phenyl)-3-phenylurea (CAS 1226431-34-0)
- 7-Bromo-4-methoxy-1H-pyrrolo[2,3-c]pyridine hydrochloride, 97% (CAS 619331-35-0)
- 22-Tricosenoic Acid (CAS 65119-95-1)
- 3-(1-Oxoisoindolin-2-yl)-3-(4-(trifluoromethyl)phenyl)propanoic acid (CAS 439096-93-2)
- Semaglutide Impurity 142 (CAS CATO-C4X-2226142)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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