6-Ethylisothiazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione CAS 1338666-14-0
| CAS No. | 1338666-14-0 |
| Molecular Formula | C7H7N3O2S |
| Molecular Weight | 197.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Ethylisothiazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione (C7H7N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
6-Ethylisothiazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione (CAS 1338666-14-0) is a high-purity analytical reference standard with the molecular formula C7H7N3O2S and a molecular weight of 197.21 g/mol.
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 6-Ethylisothiazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione 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 | C7H7N3O2S |
| Molecular Weight | 197.21 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ethylisothiazolo Standards
Recommended Standards
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- Ethyl 2-(4-bromo-2-nitrophenoxy)acetate (CAS 528892-33-3)
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- 3-Methyl orsellinic Acid (CAS 4707-46-4)
- (2S,4R,5S)-Methyl 4-hydroxy-5-isobutylpyrrolidine-2-carboxylate (CAS 1993030-53-7)
- Des-Pro-Pro-Tirzepatide (CAS CATO-CPTD788696)
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