| CAS No. | 95096-01-8 |
| Molecular Formula | C13H9Cl2N5OS |
| Molecular Weight | 354.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6-((3,4-Dichlorophenyl)sulfinyl)pyrido[3,2-d]pyrimidine-2,4-diamine (CAS 95096-01-8) is a high-purity analytical reference standard with the molecular formula C13H9Cl2N5OS and a molecular weight of 354.21 g/mol.
6-((3,4-Dichlorophenyl)sulfinyl)pyrido[3,2-d]pyrimidine-2,4-diamine (C13H9Cl2N5OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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.
| Molecular Formula | C13H9Cl2N5OS |
| Molecular Weight | 354.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |