| CAS No. | 691868-70-9 |
| Molecular Formula | C17H11N5OS |
| Molecular Weight | 333.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 333.37 g/mol gives 12-{2-methylpyrazolo[1,5-a]pyrimidin-7-yl}-8-thia-1,10-diazatricyclo[7.4.0.0^{2,7}]trideca-2,4,6,9,11-pentaen-13-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
12-{2-methylpyrazolo[1,5-a]pyrimidin-7-yl}-8-thia-1,10-diazatricyclo[7.4.0.0^{2,7}]trideca-2,4,6,9,11-pentaen-13-one (CAS 691868-70-9) is a high-purity analytical reference standard with the molecular formula C17H11N5OS and a molecular weight of 333.37 g/mol.
The molecular framework of 12-{2-methylpyrazolo[1,5-a]pyrimidin-7-yl}-8-thia-1,10-diazatricyclo[7.4.0.0^{2,7}]trideca-2,4,6,9,11-pentaen-13-one (C17H11N5OS) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C17H11N5OS |
| Molecular Weight | 333.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |