| CAS No. | 128069-60-3 |
| Molecular Formula | C9H12N2O2S |
| Molecular Weight | 212.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Methyl 5,6,7,8-tetrahydro-4H-thiazolo[5,4-b]azepine-2-carboxylate.
Methyl 5,6,7,8-tetrahydro-4H-thiazolo[5,4-b]azepine-2-carboxylate (CAS 128069-60-3) is a high-purity analytical reference standard with the molecular formula C9H12N2O2S and a molecular weight of 212.27 g/mol.
Methyl 5,6,7,8-tetrahydro-4H-thiazolo[5,4-b]azepine-2-carboxylate (C9H12N2O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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 | C9H12N2O2S |
| Molecular Weight | 212.27 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |