4-chlorothiophene-2-carbaldehyde CAS 57500-51-3
| CAS No. | 57500-51-3 |
| Molecular Formula | C5H7ClOS |
| Molecular Weight | 150.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-chlorothiophene-2-carbaldehyde (CAS 57500-51-3), molecular formula C5H7ClOS and molecular weight 150.63 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 4-chlorothiophene-2-carbaldehyde is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-chlorothiophene-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 | C5H7ClOS |
| Molecular Weight | 150.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chlorothiophene Standards
- 5-chlorothiophene-3-carbaldehyde (CAS 36155-85-8)
- 3-Chlorothiophene-2-thiol (CAS 210178-04-4)
- 5-Chlorothiophene-2-thiol (CAS 2404-97-9)
- 3-Chlorothiophene-2-methanol (CAS 193602-41-4)
- 5-chlorothiophene-3-carbonitrile (CAS 1108712-56-6)
- 3-chlorothiophene-2-carbonitrile (CAS 147123-67-9)
- 4-chlorothiophene-2-carbonitrile (CAS 910553-55-8)
- 5-chlorothiophene-2-carbonitrile (CAS 50478-16-5)
Recommended Standards
- 3-CHLORO-2-HYDRAZINO-1,2-DIHYDROPYRAZINE HYDROCHLORIDE 63286-28-2 DB-002063 (CAS 63286-28-2)
- 5-Chloro-5,6-dihydro-4H-1,3-thiazin-2-amine (CAS 34025-37-1)
- N-(3-Aminopropyl)-2-chloroacetamide (CAS 89294-24-6)
- 6-chloropyridazine-3,4-diamine (CAS 932-50-3)
- (5-Methylthiophen-3-yl)methanamine (CAS 104163-37-3)
- 2-Chloro-3,4-difluorobenzaldehyde (CAS 1261869-07-1)
- (E)-2-(4-(dimethylamino)benzylidene)-4,4-dimethyl-3-oxopentanenitrile (CAS 1497445-43-8)
- (E)-[(2,6-Dichlorophenyl)methoxy]({1-[2-(4-methoxyphenyl)cyclopropyl]ethylidene})amine (CAS 478262-66-7)
- 1-(4-Fluorobenzyl)cyclobutanecarboxylic acid (CAS 1439900-45-4)
- Methyl 4-(3-(pyrrolidin-1-yl)but-2-enamido)benzoate (CAS 337921-20-7)
- Loratadine Impurity 29 (CAS 125743-81-9)
- 4-Bromo-1-(methanesulfonylmethyl)-1H-pyrazole (CAS 1799792-00-9)
- Ethyl 3-hexyl-3-methyloxirane-2-carboxylate (CAS 37545-94-1)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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