| CAS No. | 21877-95-2 |
| Molecular Formula | C16H25NO8 |
| Molecular Weight | 359.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
4-((4-(4-(2,4-Diaminopyrimidin-5-yl)butyl)phenyl)carbamoyl)benzene-1-sulfonyl fluoride sulfate (CAS 21877-95-2), molecular formula C16H25NO8 and molecular weight 359.37 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-((4-(4-(2,4-Diaminopyrimidin-5-yl)butyl)phenyl)carbamoyl)benzene-1-sulfonyl fluoride sulfate (C16H25NO8) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 359.37 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H25NO8 |
| Molecular Weight | 359.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |