| CAS No. | 77995-55-2 |
| Molecular Formula | C9H12N4S |
| Molecular Weight | 208.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 208.28 g/mol gives 4-Hydrazinyl-2,5,6-trimethylthieno[2,3-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Hydrazinyl-2,5,6-trimethylthieno[2,3-d]pyrimidine (CAS 77995-55-2), molecular formula C9H12N4S and molecular weight 208.28 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Hydrazinyl-2,5,6-trimethylthieno[2,3-d]pyrimidine (C9H12N4S) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H12N4S |
| Molecular Weight | 208.28 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |