2,7-Dichlorothiazolo[5,4-d]pyrimidine CAS 19602-61-0
| CAS No. | 19602-61-0 |
| Molecular Formula | C5HCl2N3S |
| Molecular Weight | 206.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,7-Dichlorothiazolo[5,4-d]pyrimidine (CAS 19602-61-0), molecular formula C5HCl2N3S and molecular weight 206.05 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,7-Dichlorothiazolo[5,4-d]pyrimidine (C5HCl2N3S) contains a nitrile group, sulfur-containing functionality, chlorine substitution. 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 206.05 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).
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.
Physical & Chemical Properties
| Molecular Formula | C5HCl2N3S |
| Molecular Weight | 206.05 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dichlorothiazolo Standards
- 5,7-Dichlorothiazolo[4,5-d]pyrimidine (CAS 1137278-39-7)
- 5,7-Dichlorothiazolo[5,4-d]pyrimidine (CAS 13479-88-4)
- 2,5-Dichlorothiazolo[5,4-d]pyrimidine (CAS 13479-89-5)
- 4,7-Dichlorothiazolo[4,5-d]pyridazine (CAS 13669-90-4)
- 2,6-Dichlorothiazolo[4,5-c]pyridine (CAS 1206980-92-8)
- 2,6-Dichlorothiazolo[5,4-b]pyridine (CAS 159870-89-0)
- 2,5-Dichlorothiazolo[4,5-b]pyridine (CAS 2567498-97-7)
- 2,5-Dichlorothiazolo[5,4-b]pyridine (CAS 857970-66-2)
Recommended Standards
- (6-(2-Methylpyrrolidin-1-yl)pyridin-3-yl)boronic acid (CAS 1951411-68-9)
- (2-(Piperidin-3-yl)pyridin-3-yl)boronic acid (CAS 2225152-68-9)
- 2,5-Bis(trifluoromethyl)-1,3,4-oxadiazole (CAS 1868-48-0)
- (2-(Tetrahydro-2H-pyran-4-yl)phenyl)boronic acid (CAS 2225178-22-1)
- 6,7-Difluoro-1,3-benzoxazol-2-amine hydrochloride (CAS 1820608-43-2)
- 4-Fluoro-3-(5-(morpholinomethyl)-1,2,4-oxadiazol-3-yl)benzaldehyde (CAS 1119450-78-0)
- (7-Fluorochroman-3-yl)methanol (CAS 1823364-10-8)
- N-Nitroso N-Desisopropyl Disopyramide (CAS CATO-C3D-262125)
- 2-{2-[(trifluoromethyl)sulfanyl]ethyl}-2,3-dihydro-1H-isoindole-1,3-dione (CAS 1408279-16-2)
- N-(2,4-Dimethylphenyl)-1-(3,4-dimethylphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide (CAS 866872-28-8)
- Methyl 5-cyano-1H-pyrrole-3-carboxylate (CAS 66832-08-4)
- N-(4-Chlorobenzyl)-N-cyclopropyl-2-(3-hydroxypiperidin-1-yl)acetamide (CAS 1353954-37-6)
- 2-Methyl-2-(pyridin-4-yloxy)propanoic acid (CAS 605680-47-5)
- (Ser(PO3H2)202,Thr(PO3H2)205)-Tau Peptide (194-213) trifluoroacetate salt (CAS 2022956-55-2)
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