7-Chloro-5H-thiazolo[3,2-a]pyrimidin-5-one CAS 66155-69-9
| CAS No. | 66155-69-9 |
| Molecular Formula | C6H3ClN2OS |
| Molecular Weight | 186.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Chloro-5H-thiazolo[3,2-a]pyrimidin-5-one is closely related to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 7-Chloro-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 66155-69-9), a certified reference material (molecular formula C6H3ClN2OS, MW 186.62 g/mol) for analytical method development and quality control.
Structurally, 7-Chloro-5H-thiazolo[3,2-a]pyrimidin-5-one (C6H3ClN2OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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 186.62 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 7-Chloro-5H-thiazolo[3,2-a]pyrimidin-5-one 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 | C6H3ClN2OS |
| Molecular Weight | 186.62 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 6-Chloro-[1,2,4]triazolo[4,3-b]pyridazine-3-thiol (CAS 111317-12-5)
- 4-Chloro-6-(methylthio)pyrimidine-5-carbaldehyde (CAS 1120214-80-3)
- 3-chloro-5-(thiophen-2-yl)-1,2,4-oxadiazole (CAS 1257878-65-1)
- 6-chloro-[1,3]thiazolo[4,5-b]pyrazin-2-amine (CAS 1440427-74-6)
- 3-chloro-5-(thiophen-3-yl)-1,2,4-oxadiazole (CAS 1443981-98-3)
- 2-Chloro-7H-purine-8(9H)-thione (CAS 89364-07-8)
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Recommended Standards
- 5-Chlorothiazolo[4,5-d]pyrimidin-7-amine (CAS 2090316-23-5)
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- Famotidine Impurity 78 (CAS 88068-99-9)
- 5-(5-Chlorothiophen-2-yl)-2H-tetrazole (CAS 58884-89-2)
- Ethyl-D-proline (CAS 165552-34-1)
- 1-((4-Chlorophenyl)sulfonyl)-N'-(4-methylbenzoyl)piperidine-4-carbohydrazide (CAS 477872-85-8)
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- 1-(2-Bromo-4-nitrophenyl)ethan-1-one (CAS 90004-93-6)
- 6-[2(Trimethylsilyl)-1-ethynyl]-1,3-benzodioxole-5-vinylmethanol (CAS 1346602-58-1)
- 4-(Pyrimidin-4-yl)-1H-pyrazol-3-amine (CAS 1111638-49-3)
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