4-Methyl-1,1,3-trioxothieno[3,2-d][1,2]thiazole-5-carboxylic acid CAS 731802-17-8
| CAS No. | 731802-17-8 |
| Molecular Formula | C7H5NO5S2 |
| Molecular Weight | 247.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Methyl-1,1,3-trioxothieno[3,2-d][1,2]thiazole-5-carboxylic acid.
4-Methyl-1,1,3-trioxothieno[3,2-d][1,2]thiazole-5-carboxylic acid (CAS 731802-17-8), molecular formula C7H5NO5S2 and molecular weight 247.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Methyl-1,1,3-trioxothieno[3,2-d][1,2]thiazole-5-carboxylic acid (C7H5NO5S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 247.25 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures 4-Methyl-1,1,3-trioxothieno[3,2-d][1,2]thiazole-5-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5NO5S2 |
| Molecular Weight | 247.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
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