2-Chloro-3-methylthiophene CAS 14345-97-2
| CAS No. | 14345-97-2 |
| Molecular Formula | C5H5ClS |
| Molecular Weight | 132.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chloro-3-methylthiophene 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 2-Chloro-3-methylthiophene (CAS 14345-97-2), a certified reference material (molecular formula C5H5ClS, MW 132.61 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H5ClS, 2-Chloro-3-methylthiophene contains sulfur-containing functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 132.61 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 | C5H5ClS |
| Molecular Weight | 132.61 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-5-methylthiophene (CAS 17249-82-0)
- 3-Chloro-2-methylthiophene (CAS 17249-83-1)
- 2-Chloro-4-methylthiophene (CAS 91505-25-8)
- 4-Chloro-2-methylthiophene (CAS 91375-70-1)
- 5-chloro-5-methylhex-1-ene (CAS 116911-84-3)
- 6-Chloro-5-methylhex-1-ene (CAS 1342612-45-6)
- 1-Chloro-1-methylcyclohexane (CAS 931-78-2)
- 1-Chloro-3-ethylpent-2-ene (CAS 761-20-6)
Recommended Standards
- 1134E5H2KV 822-87-7 2-Chlorocyclohexanone Cyclohexanone, 2-chloro- alpha-Chlorocyclohexanone 2-Chlorocyclohexonone EINECS 212-505-5 NSC 12439 UNII-1134E5H2KV (CAS 822-87-7)
- Hex-5-enoyl chloride (CAS 36394-07-7)
- Cyclopentanecarbonyl Chloride (CAS 4524-93-0)
- 6-Chlorohex-1-en-3-one (CAS 76328-94-4)
- 1,4-Dichloro-2,5-diethoxybenzene (CAS 67828-63-1)
- 2’-Chloro-2-phenylacetophenone (CAS 72867-72-2)
- ethyl 4-(3-nitro-1H-pyrazol-1-yl)butanoate (CAS 898053-29-7)
- ((R)-3-Benzyloxycarbonylamino-piperidin-1-yl)-acetic acid (CAS 1354016-38-8)
- 2-(3-Aminopiperidin-1-yl)-N-(4-methylthiazol-2-yl)acetamide (CAS 1306229-32-2)
- 3-Chloro-5-fluoro-4-(1-methylethoxy)-benzoic acid (CAS 1272528-98-9)
- (S)-2-Amino-3-(1-formyl-1H-indol-3-yl)propanoic acid (CAS 74257-18-4)
- Aripiprazole Impurity 4 (CAS 1424858-02-5)
- 3-[4-(2-Methoxyphenoxy)pyrimidin-2-yl]benzoic acid (CAS 1170564-11-0)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
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