4-Chloro-6-phenylthieno[2,3-d]pyrimidine CAS 35970-79-7
| CAS No. | 35970-79-7 |
| Molecular Formula | C12H7ClN2S |
| Molecular Weight | 246.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Chloro-6-phenylthieno[2,3-d]pyrimidine.
4-Chloro-6-phenylthieno[2,3-d]pyrimidine (CAS 35970-79-7), molecular formula C12H7ClN2S and molecular weight 246.72 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloro-6-phenylthieno[2,3-d]pyrimidine (C12H7ClN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C12H7ClN2S |
| Molecular Weight | 246.72 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5-phenylthieno[2,3-d]pyrimidine (CAS 1225701-41-6)
- 1-Chloro-4-(thiophen-2-yl)phthalazine, 97% (CAS 124959-34-8)
- 1-Chloro-4-(thiophen-3-yl)phthalazine, 97% (CAS 149549-07-5)
- 4-Chloro-5-phenylthieno[2,3-d]pyrimidine (CAS 182198-35-2)
- 2-((4-Chloro-6-(dimethylamino)pyrimidin-2-yl)thio)acetamide (CAS 86627-44-3)
- 2-Chloro-3-(2-thienyl)quinoxaline (CAS 71266-18-7)
- 2-Chloro-4-phenylthieno[2,3-d]pyrimidine (CAS 56844-18-9)
- 4-Chloro-2-(thiophen-3-yl)quinazoline (CAS 924068-56-4)
Recommended Standards
- 4-chloro-2-thien-2-ylquinazoline (CAS 59455-95-7)
- 4-Chloro-6-phenylthieno[3,2-d]pyrimidine (CAS 209853-25-8)
- 4-Chloro-2-phenylthieno[3,2-d]pyrimidine (CAS 214417-22-8)
- 4-Chloro-7-phenylthieno[3,2-d]pyrimidine (CAS 827614-26-6)
- (2E)-N-(4-tert-Butylphenyl)-4-(4-ethoxyphenyl)-4-oxobut-2-enamide (CAS 331461-85-9)
- N-methyl-2-tosylethan-1-amine (CAS 61097-92-5)
- 5-Chloro-2-methoxypyridine 1-oxide (CAS 719305-31-4)
- 1-(4-(4-Chlorophenyl)thiazol-2-yl)-N-(4-methylbenzyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxamide (CAS 321998-53-2)
- Tert-butyl 1,2,3,4-tetrahydroquinoline-5-carboxylate (CAS 1183823-48-4)
- N-[2-(Azepane-1-carbonyl)thiophen-3-yl]benzamide (CAS 692737-22-7)
- tert-Butyl (5-amino-2,3-dimethyl-5-oxopent-1-en-3-yl)carbamate (CAS 1335041-86-5)
- 3-Amino-2-ethylquinazolin-4(3H)-one (CAS 50547-51-8)
- 2-((5-(2-Hydroxyphenyl)-1,3,4-oxadiazol-2-yl)thio)-N-(m-tolyl)acetamide (CAS 336173-79-6)
- D-[Ala]24-Semaglutide (CAS CATO-C4X-2226126)
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