7-Chlorothiazolo[4,5-d]pyrimidine-2-thiol CAS 1820651-41-9
| CAS No. | 1820651-41-9 |
| Molecular Formula | C5H2ClN3S2 |
| Molecular Weight | 203.67 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.
CATO supplies 7-Chlorothiazolo[4,5-d]pyrimidine-2-thiol (CAS 1820651-41-9), a certified reference material (molecular formula C5H2ClN3S2, MW 203.67 g/mol) for analytical method development and quality control.
Structurally, 7-Chlorothiazolo[4,5-d]pyrimidine-2-thiol (C5H2ClN3S2) 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 203.67 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures 7-Chlorothiazolo[4,5-d]pyrimidine-2-thiol 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 | C5H2ClN3S2 |
| Molecular Weight | 203.67 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.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Chlorothiazolo Standards
- 7-Chlorothiazolo[5,4-d]pyrimidine-2-thiol (CAS 1707571-66-1)
- 5-Chlorothiazolo[4,5-b]pyridine-2(3H)-thione (CAS 1801345-62-9)
- 6-Chlorothiazolo[4,5-b]pyridine-2-thiol (CAS 488742-54-7)
- 7-Chlorothiazolo[4,5-c]pyridine-2(3H)-thione (CAS 908355-84-0)
- 6-chlorothiazolo[5,4-c]pyridin-2-amine (CAS 1206250-50-1)
- 5-chlorothiazolo[5,4-b]pyridin-2-amine (CAS 31784-71-1)
- 7-Chlorothiazolo[4,5-b]pyridine-2-carboxylic acid (CAS 1206248-22-7)
- 5-Chlorothiazolo[4,5-b]pyridine-2-carboxylic acid (CAS 1206248-67-0)
Recommended Standards
- 3-(Chloromethyl)-5-phenylpyridine (CAS 177976-31-7)
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- 2-Benzyl-5-chloropyridine (CAS 1874155-32-4)
- 2-Chloro-5-methyl-4-phenylpyridine (CAS 1686126-78-2)
- 2,5-Dimethyl-1-(3-methylbenzyl)-1H-pyrrole-3-carbaldehyde (CAS 937662-69-6)
- 2,4-Dichlorthiophen (CAS 17249-75-1)
- 2-hydroxy-3-methoxy-4-nitrobenzoic acid (CAS 61203-50-7)
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- 3'-Bromo-2,2,2-trifluoroacetophenone 3-Bromo-A,A,A-trifluoroacetophenone 1-(3-bromophenyl)-2,2,2-trifluoroethan-1-one 1-(3-bromophenyl)-2,2,2-trifluoroethanone 655-26-5 (CAS 655-26-5)
- Siloxanes and Silicones, di-Me, Me 3,3,3-trifluoropropyl, vinyl group-terminated (CAS 68951-98-4)
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- Methyl 2-(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)acetate (CAS 1189749-80-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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