2-Chlorothiophene-3-carbaldehyde CAS 14345-98-3
| CAS No. | 14345-98-3 |
| Molecular Formula | C5H3ClOS |
| Molecular Weight | 146.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Chlorothiophene-3-carbaldehyde (CAS 14345-98-3), molecular formula C5H3ClOS and molecular weight 146.59 g/mol, is a CATO reference standard with documented purity and traceability.
2-Chlorothiophene-3-carbaldehyde (C5H3ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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).
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 | C5H3ClOS |
| Molecular Weight | 146.59 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 | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorothiophene Standards
- 4-chlorothiophene-3-carbaldehyde (CAS 36155-89-2)
- 3-Chlorothiophene-2-Carbaldehyde (CAS 67482-48-8)
- 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)
- 3-Chlorothiophene-2-methanol (CAS 193602-41-4)
- 4-Chlorothiophene-3-carbonitrile (CAS 1174535-30-8)
Recommended Standards
- 4-Fluorobenzyl-α,α-d2 Chloride (CAS 1219804-18-8)
- 3-Thiophenecarbonyl Chloride (CAS 41507-35-1)
- 5-(1-chloroethyl)-1-methyl-1H-1,2,3,4-tetrazole (CAS 186958-71-4)
- 5-(2-chloroethyl)-1-methyl-1H-1,2,3,4-tetrazole (CAS 15284-37-4)
- 4-{[1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]formamido}-N-[(4-methylphenyl)methyl]butanamide (CAS 956959-91-4)
- 3-(Chloromethyl)-2-methylquinoline (CAS 500575-85-9)
- ((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)hydrazine hydrochloride (CAS 74754-30-6)
- Potassium diphenylphosphate solution (CAS 15475-27-1)
- 4-Cyclopropyl-1-(2-methylphenyl)-1,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one (CAS 1105197-37-2)
- 4,6-Dichloropyrazolo[1,5-a]pyridine-3-carbonitrile (CAS 2642164-54-1)
- (5E)-3-(4-Methylphenyl)-5-{[(4-methylphenyl)amino]methylidene}-4-oxo-1,3-thiazolidin-1-ium-1-olate (CAS 338753-40-5)
- 5-Bromo-2,4-difluorobenzyl chloride (CAS 1260810-32-9)
- Ethyl 7-thioxo-6,7-dihydrothiazolo[5,4-d]pyrimidine-2-carboxylate (CAS 1067188-55-9)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com