5-(Chloromethyl)isothiazole CAS 1710-68-5
| CAS No. | 1710-68-5 |
| Molecular Formula | C4H4ClNS |
| Molecular Weight | 133.60 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.
5-(Chloromethyl)isothiazole (CAS 1710-68-5), molecular formula C4H4ClNS and molecular weight 133.60 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(Chloromethyl)isothiazole (C4H4ClNS) contains a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 133.60 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.
Physical & Chemical Properties
| Molecular Formula | C4H4ClNS |
| Molecular Weight | 133.60 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloromethyl Standards
- 3-(Chloromethyl)isothiazole (CAS 1246549-42-7)
- 4-(Chloromethyl)isothiazole (CAS 89033-79-4)
- 5-(Chloromethyl)thiazole (CAS 45438-77-5)
- (R)-5-(Chloromethyl)pyrrolidin-2-one (CAS 138541-53-4)
- (S)-5-(Chloromethyl)pyrrolidin-2-one (CAS 72479-04-0)
- 1-(Chloromethyl)pyrrolidin-2-one (CAS 31282-95-8)
- 5-(Chloromethyl)-3-methyl-4,5-dihydroisoxazole (CAS 69578-12-7)
- 53598-88-2 (+/-)-4-(Chloromethyl)-4-methylazetidin-2-one MFCD19232808 (CAS 53598-88-2)
Recommended Standards
- 4-Chlorothiophen-2-amine (CAS 1427372-77-7)
- 2-Chloro-4-methylthiazole (CAS 26847-01-8)
- 3-Chloro-5-methylisothiazole (CAS 14217-67-5)
- 2-Chloro-5-methylthiazole (CAS 33342-65-3)
- 2-[4-(4-Methoxyphenyl)piperazin-1-yl]quinoxaline (CAS 241146-75-8)
- 3,3-Dimethoxycyclobutan-1-amine (CAS 1638759-70-2)
- 6-(3-Chloro-4-ethoxyphenyl)-3-methylimidazo[2,1-b]thiazole-2-carboxylic acid (CAS 1437481-32-7)
- 3-(3-Acetyl-4-hydroxy-5-oxo-2-phenyl-2,5-dihydro-1H-pyrrol-1-yl)propanoic acid (CAS 371232-66-5)
- 2-(6-(Cyclopentyloxy)pyridin-3-yl)ethan-1-amine dihydrochloride (CAS 1337879-88-5)
- N-(2-Chloro-5-hydroxyphenyl)acetamide (CAS 130647-86-8)
- Vinyl heptafluorobutanoate (CAS 356-28-5)
- 12-Epi-salvinorin A (CAS 1120330-49-5)
- (2R,4S)-tert-butyl 4-amino-2-(4-chlorobenzyl)piperidine-1-carboxylate (CAS 2306253-85-8)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
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