4-Chloro-7,8-dihydro-6H-thiopyrano[3,2-d]pyrimidine CAS 111896-68-5
| CAS No. | 111896-68-5 |
| Molecular Formula | C7H7ClN2S |
| Molecular Weight | 186.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Chloro-7,8-dihydro-6H-thiopyrano[3,2-d]pyrimidine (CAS 111896-68-5) is a high-purity analytical reference standard with the molecular formula C7H7ClN2S and a molecular weight of 186.66 g/mol.
The molecular framework of 4-Chloro-7,8-dihydro-6H-thiopyrano[3,2-d]pyrimidine (C7H7ClN2S) is characterized by a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 4-Chloro-7,8-dihydro-6H-thiopyrano[3,2-d]pyrimidine 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 | C7H7ClN2S |
| Molecular Weight | 186.66 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-5-methyl-5,7-dihydrothieno[3,4-d]pyrimidine (CAS 1001123-70-1)
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Recommended Standards
- 2-((3-Chlorophenyl)thio)acetaldehyde (CAS 1082574-04-6)
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- 4-methoxybutane-2-sulfonyl chloride (CAS 1250276-93-7)
- 2-Methoxy-[3,4'-bipyridin]-2'-amine (CAS 1192814-85-9)
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- 2-bromo-4-(trifluoromethyl)benzaldehyde 2-bromo-4-(trifluoromethyl)benzaldehyde; 2-bromo-4-trifluoromethylbenzaldehyde 85118-24-7 EBD948636 (CAS 85118-24-7)
- Benzoic acid, 4-(3-hydroxy-1-propen-1-yl)-, methyl ester (CAS 87808-23-9)
- tert-Butyl (4-cyano-2-nitrophenyl)carbamate (CAS 388571-31-1)
- Ethyl 2-(4-chloro-2-methylpyrimidin-5-yl)acetate (CAS 14273-76-8)
- Halquinol (CAS 8067-69-4)
- 2-(Allyloxy)ethyl acrylate (CAS 7784-80-7)
- D-allo-Thr5-Semaglutide (CAS CATO-C4X-2226243)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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