2,4-Dichloro-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine CAS 181374-43-6
| CAS No. | 181374-43-6 |
| Molecular Formula | C7H6Cl2N2S |
| Molecular Weight | 221.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H6Cl2N2S, 2,4-Dichloro-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine contains a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 221.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 2,4-Dichloro-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine (CAS 181374-43-6), a certified reference material (molecular formula C7H6Cl2N2S, MW 221.11 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2,4-Dichloro-7,8-dihydro-5H-thiopyrano[4,3-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 | C7H6Cl2N2S |
| Molecular Weight | 221.11 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.) | 2008 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- 2,4-Dichloro-6,8-dihydro-5H-thiopyrano[3,4-d]pyrimidine (CAS 1434142-20-7)
- 2,4-Dichloro-7,8-dihydro-6H-thiopyrano[3,2-d]pyrimidine (CAS 87466-23-7)
- 1,3-Dichloro-4,5,6,7-tetrahydro-2-benzothiophen-4-one (CAS 35061-13-3)
- 2,6-Dichloro-4-(methylthio)benzaldehyde (CAS 616196-04-4)
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Recommended Standards
- 2-Amino-5-fluoro-3-(trifluoromethoxy)isonicotinonitrile (CAS 1803459-13-3)
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- 1-(2,4-Dichlorophenyl)thiourea (CAS 6326-14-3)
- 2-chloro-2-fluoro-2-(2,3,4-trifluoro-5,6-diphenyl-phenyl)acetamide 5212-71-5 CTK1H1896 (CAS 5212-71-5)
- N-(2,2-Diethoxyethyl)-6-((tetrahydro-2H-pyran-4-yl)oxy)nicotinamide (CAS 2034295-14-0)
- 5-(6-Formylpyridin-2-yl)thiophene-2-carboxylic acid (CAS 656227-41-7)
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- Tert-butyl 3-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)pyrrolidine-1-carboxylate (CAS 2365173-86-8)
- Methyl 3-(1-((2R,4S,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-(((2-cyanoethoxy)(diisopropylamino)phosphanyl)oxy)tetrahydrofuran-2-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)acrylate (CAS 198080-38-5)
- N-Benzyl-N-ethynyl-4-methylbenzenesulfonamide (CAS 205885-39-8)
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