5-chloro-1-benzothiophene-2-carbaldehyde CAS 28540-51-4
| CAS No. | 28540-51-4 |
| Molecular Formula | C9H13ClOS |
| Molecular Weight | 204.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-chloro-1-benzothiophene-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.
CATO supplies 5-chloro-1-benzothiophene-2-carbaldehyde (CAS 28540-51-4), a certified reference material (molecular formula C9H13ClOS, MW 204.72 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H13ClOS, 5-chloro-1-benzothiophene-2-carbaldehyde contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C9H13ClOS |
| Molecular Weight | 204.72 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- benzothiophene-3-carbonyl chloride (CAS 39827-12-8)
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- 3-(5-Chlorothiophen-2-yl)pentan-3-ol (CAS 1379334-48-1)
- (R)-(2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl 4-methylbenzenesulfonate (CAS 62501-70-6)
- (6-(4-Fluorophenyl)-1H-indol-3-yl)-N,N-dimethylmethanamine (CAS 1214377-52-2)
- 3-Bromo-5-(2,2,2-trifluoroethyl)pyridine (CAS 1375303-72-2)
- Etilefrine Impurity D (CAS 42146-10-1)
- 4-Chloro-6-((4-methoxyphenyl)thio)pyrimidin-2-amine (CAS 1375996-02-3)
- (3-(3-Phenyl-1,2,4-oxadiazol-5-yl)azetidin-1-yl)(thiophen-2-yl)methanone (CAS 1251688-45-5)
- 1-(1,3-Dimethyl-1h-pyrazol-4-yl)hexan-1-one (CAS 1174850-21-5)
- 3-Benzyl-1,2-oxathiolane 2,2-dioxide (CAS 75732-43-3)
- 5-[(2,4-dichlorobenzyl)sulfanyl]-8,9-dimethoxy-2-methyl[1,2,4]triazolo[1,5-c]quinazoline (CAS 860611-22-9)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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