5-Chloro-2-methyl-2,3-dihydroisothiazole CAS 87701-39-1
| CAS No. | 87701-39-1 |
| Molecular Formula | C4H6ClNS |
| Molecular Weight | 135.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chloro-2-methyl-2,3-dihydroisothiazole is closely related to a nitrile group, sulfur-containing functionality, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-Chloro-2-methyl-2,3-dihydroisothiazole (CAS 87701-39-1), a certified reference material (molecular formula C4H6ClNS, MW 135.62 g/mol) for analytical method development and quality control.
Structurally, 5-Chloro-2-methyl-2,3-dihydroisothiazole (C4H6ClNS) contains a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 135.62 g/mol, it falls into the low-molecular-weight range. 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.
CATO manufactures 5-Chloro-2-methyl-2,3-dihydroisothiazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H6ClNS |
| Molecular Weight | 135.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 5-chloro-3-methyl-1H-pyrazol-4-amine (CAS 1064687-15-5)
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Recommended Standards
- 2-Amino-4-chloropyrimidine 2-pyrimidinamine, 4-chloro- 2-amino-4-chloro pyrimidine 4-chloropyrimidin-2-amine 2-amine-4-chloropyrimidine 3993-78-0 (CAS 3993-78-0)
- 1-chloranyl-3-isothiocyanato-propane 1-chloro-3-isothiocyanatopropane 2799-72-6 A819276 (CAS 2799-72-6)
- 2-Amino-5-chloropyrazine 33332-29-5 5-Chloro-pyrazin-2-ylamine A5947 (CAS 33332-29-5)
- 6-Chlorohexan-1-amine (CAS 16036-99-0)
- 3-(Hydroxymethyl)imidazo[1,2-a]pyridine-6-carbonitrile (CAS 1313726-32-7)
- 2-Bromo-1-[4-(difluoromethoxy)-3-methoxyphenyl]ethan-1-one (CAS 149169-71-1)
- (S)-5-Oxopyrrolidine-3-carboxamide (CAS 2484705-16-8)
- 3-Ethyl-2-oxopyrrolidine-3-carboxylic acid (CAS 1520548-29-1)
- 6-(Methylamino)pyrimidine-2,4-diol (CAS 34284-87-2)
- 3-(2-Methylpropoxy)phenol (CAS 91950-13-9)
- Felbinac Impurity 4 (CAS 4575-44-4)
- 3-Amino-n-butyl-n-methylbenzene-1-sulfonamide (CAS 1016528-39-4)
- (7R,8aS)-7-fluorohexahydropyrrolo[1,2-a]pyrazin-1(2H)-one (CAS 2165427-89-2)
- Integrin Binding Peptide trifluoroacetate salt (CAS 278792-07-7)
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