| CAS No. | 68640-86-8 |
| Molecular Formula | C6H5N3OS3 |
| Molecular Weight | 231.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
3-Hydroxy-2-methylpyrazolo[3,4-d][1,3]thiazine-4,6(2H,7H)-dithione (CAS 68640-86-8), molecular formula C6H5N3OS3 and molecular weight 231.32 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system, 3-Hydroxy-2-methylpyrazolo[3,4-d][1,3]thiazine-4,6(2H,7H)-dithione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 231.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 3-Hydroxy-2-methylpyrazolo[3,4-d][1,3]thiazine-4,6(2H,7H)-dithione 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.
| Molecular Formula | C6H5N3OS3 |
| Molecular Weight | 231.32 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.) | 1976 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 3 |