| CAS No. | 1253791-05-7 |
| Molecular Formula | C14H13N3O4S |
| Molecular Weight | 319.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Ethyl 5-hydroxy-2-(methylthio)-7-oxo-8-(prop-2-ynyl)-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylat (CAS 1253791-05-7), molecular formula C14H13N3O4S and molecular weight 319.34 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H13N3O4S, Ethyl 5-hydroxy-2-(methylthio)-7-oxo-8-(prop-2-ynyl)-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylat contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 319.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Ethyl 5-hydroxy-2-(methylthio)-7-oxo-8-(prop-2-ynyl)-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylat 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.
| Molecular Formula | C14H13N3O4S |
| Molecular Weight | 319.34 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |