3,5-Dimethylthiazolo[5,4-c]isoxazole CAS 221558-41-4
| CAS No. | 221558-41-4 |
| Molecular Formula | C6H6N2OS |
| Molecular Weight | 154.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dimethylthiazolo[5,4-c]isoxazole (C6H6N2OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; 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).
3,5-Dimethylthiazolo[5,4-c]isoxazole (CAS 221558-41-4) is a high-purity analytical reference standard with the molecular formula C6H6N2OS and a molecular weight of 154.19 g/mol.
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.
As a certified reference material (CRM), 3,5-Dimethylthiazolo[5,4-c]isoxazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H6N2OS |
| Molecular Weight | 154.19 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dimethylthiazolo Standards
- 2,6-Dimethylthiazolo[5',4':4,5]benzo[1,2-d]oxazole (CAS 114097-57-3)
- N-(5,7-Dimethylthiazolo[4,5-b]pyridin-2-yl)cyclohexanecarboxamide (CAS 1021078-63-6)
- N-(5,7-Dimethylthiazolo[4,5-b]pyridin-2-yl)-3-methoxybenzamide (CAS 1021020-41-6)
- N-(5,7-Dimethylthiazolo[4,5-b]pyridin-2-yl)-2-(4-fluorophenyl)acetamide (CAS 1021020-43-8)
- N-(5,7-Dimethylthiazolo[4,5-b]pyridin-2-yl)-2-ethoxybenzamide (CAS 1021045-62-4)
- N-(5,7-Dimethylthiazolo[4,5-b]pyridin-2-yl)-2-(methylthio)benzamide (CAS 1021078-79-4)
Recommended Standards
- 3-(1H-Imidazol-4-yl)prop-2-enethioic S-acid (CAS 857240-23-4)
- 3-[(1,3,4-thiadiazol-2-yl)amino]propanenitrile (CAS 300686-01-5)
- 2-Thioxo-1,2-dihydropyridine-3-carboxamide (CAS 50596-67-3)
- 3-Amino-5-(methylthio)pyrazole-4-carbonitrile (CAS 72760-85-1)
- (E)-3-(p-Tolyl)prop-2-en-1-ol (CAS 122058-30-4)
- 1-(Cyclopentyloxy)-2-nitrobenzene (CAS 29026-77-5)
- (1E,1'E)-N',N''-Thiocarbonylbis(N,N-dimethylformimidamide) (CAS 121876-98-0)
- (R)-1-(2-Chloro-6-fluorobenzyl)pyrrolidin-3-ol (CAS 1261234-77-8)
- Ethyl 4-((3-amino-1,1,1-trifluoropropan-2-yl)oxy)-1-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate (CAS 866136-95-0)
- 3-Chloro-5-(difluoromethyl)picolinic acid (CAS 1386986-40-8)
- 4-Methoxy-6-methyl-2-(methylsulfonyl)pyrimidine (CAS 57268-32-3)
- 2-(Cyclopentylmethyl)-7-(methoxymethyl)-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine (CAS 1422132-94-2)
- Methyl 5-Bromo-1,2,4-triazole-3-carboxylate (CAS 704911-47-7)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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