4,5-Bis(chloromethyl)thiophene-2-carbaldehyde CAS 7311-72-0
| CAS No. | 7311-72-0 |
| Molecular Formula | C7H6Cl2OS |
| Molecular Weight | 209.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,5-Bis(chloromethyl)thiophene-2-carbaldehyde (CAS 7311-72-0), molecular formula C7H6Cl2OS and molecular weight 209.09 g/mol, is a CATO reference standard with documented purity and traceability.
4,5-Bis(chloromethyl)thiophene-2-carbaldehyde (C7H6Cl2OS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 4,5-Bis(chloromethyl)thiophene-2-carbaldehyde 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 | C7H6Cl2OS |
| Molecular Weight | 209.09 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Bis Standards
- 3,4-Bis(chloromethyl)-2,5-dimethylthiophene (CAS 5368-70-7)
- 3-(3-(Chloromethyl)phenyl)thiophene (CAS 129746-43-6)
- 3-(1-(Chloromethyl)cyclopropyl)tetrahydrothiophene 1,1-dioxide (CAS 1478607-31-6)
- 2-(chloromethyl)-5-phenylthiophene (CAS 62404-12-0)
- 1-(Chloromethyl)-2-(dichloromethyl)benzene (CAS 30293-58-4)
- 1-(chloromethyl)-4-(dichloromethyl)benzene (CAS 7398-44-9)
- 1-(Chloromethyl)-4-[(difluoromethyl)sulfanyl]benzene (CAS 1221723-34-7)
- 1-Benzyl-5-(chloromethyl)-1H-tetrazole (CAS 73963-43-6)
Recommended Standards
- 3,5-Dichlorophenylmethylsulfoxide (CAS 38452-22-1)
- 2-(2-bromoacetyl)thiophene (CAS 10531-41-6)
- 1,2,3,6-Tetrahydro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 375853-82-0)
- 4,6-Dichloro-5-methyl-2-(methylthio)pyrimidine (CAS 109414-76-8)
- 3,5-Difluoro-N-(2-fluorophenyl)benzenesulfonamide (CAS 923769-26-0)
- 2-(Cyclopentyloxy)propanoic acid (CAS 854673-20-4)
- n-Allyl-5-(methylthio)-2-nitrobenzamide (CAS 1090684-40-4)
- 5',8'-Dimethoxy-3',4'-dihydro-1'H-spiro[imidazolidine-4,2'-naphthalene]-2,5-dione (CAS 86264-49-5)
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- [4-fluoro-3-(3-methoxyphenoxymethyl)phenyl]methanamine hydrochloride (CAS 1193389-53-5)
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