4-Thien-2-ylbenzoyl chloride CAS 181132-70-7
| CAS No. | 181132-70-7 |
| Molecular Formula | C11H7ClOS |
| Molecular Weight | 222.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Thien-2-ylbenzoyl chloride (C11H7ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-Thien-2-ylbenzoyl chloride (CAS 181132-70-7), molecular formula C11H7ClOS and molecular weight 222.69 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C11H7ClOS |
| Molecular Weight | 222.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Thien Standards
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Recommended Standards
- 4-(4-Chlorophenyl)-2-mercaptopyrimidine (CAS 175203-08-4)
- 2-Chloro-4-(phenylsulfanyl)pyrimidine (CAS 191729-21-2)
- 5-Phenyl-2-thiophenecarbonyl chloride (CAS 17361-89-6)
- 4-chlorothieno[2,3-d]pyrimidine-2-carboxylic acid (CAS 1934817-82-9)
- 6-Chloro-N-(1-methyl-1h-pyrazol-5-yl)pyridine-3-carboxamide (CAS 1250312-35-6)
- Luteoline-7-malonylglucoside (CAS 98767-38-5)
- pyrimido[4,5-d][1,3]diazine-4-thiol (CAS 6014-08-0)
- (2Z)-2-Cyano-3-(4-methoxyphenyl)prop-2-enoic acid (CAS 1089301-34-7)
- N-(3-(Trifluoromethyl)benzyl)pyrazine-2-carboxamide (CAS 606132-12-1)
- (Z)-(2H-Indol-2-ylidene)methanol (CAS 457899-32-0)
- 2-Bromo-1,3,5-trichloro-4-fluorobenzene (CAS 1160573-92-1)
- tert-Butyl 3-amino-3,4-dihydroquinoline-1(2H)-carboxylate (CAS 885954-16-5)
- 4-Chloro-3-(furan-2-yl)benzoic acid (CAS 1261952-59-3)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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