5-Chlorothiophene-2-thiol CAS 2404-97-9
| CAS No. | 2404-97-9 |
| Molecular Formula | C4H3ClS2 |
| Molecular Weight | 150.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chlorothiophene-2-thiol (CAS 2404-97-9), a certified reference material (molecular formula C4H3ClS2, MW 150.65 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, chlorine substitution, 5-Chlorothiophene-2-thiol is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.65 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.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C4H3ClS2 |
| Molecular Weight | 150.65 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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Chlorothiophene Standards
- 3-Chlorothiophene-2-thiol (CAS 210178-04-4)
- 4-chlorothiophene-2-carbaldehyde (CAS 57500-51-3)
- 5-chlorothiophene-3-carbaldehyde (CAS 36155-85-8)
- 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
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- 1-Chloro-6-methoxyhexane (CAS 22692-46-2)
- 1-(2,4-Dichlorobenzyl)-N-(2,5-dimethoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 320419-84-9)
- 3-Chloro-6-methyl-2-phenyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 91538-29-3)
- N-(4-Aminophenyl)-2-methoxyacetamide (CAS 203739-06-4)
- 1-(2-Methylpiperidin-1-yl)decan-1-one (CAS 4629-12-3)
- Clindamycin EP Impurity A (CAS 154-21-2)
- 2-{[6-methyl-4-(trifluoromethyl)-2-pyridyl]thio}ethan-1-ol (CAS 245728-41-0)
- 3-(2-Chloro-5-methylphenyl)benzonitrile (CAS 1365272-10-1)
- Sitafloxacin Impurity 23 (CAS 127199-15-9)
- 3-(2-Bromo-4-methoxyphenyl)-1H-pyrazol-5-amine hydrochloride (CAS 1031793-74-4)
- Osteoblast Activating Peptide (mouse, rat) (H-7262.0500) (CAS 1222950-80-2)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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