3-Chloro-4-methoxy-1,2,5-thiadiazole CAS 5728-16-5
| CAS No. | 5728-16-5 |
| Molecular Formula | C3H3ClN2OS |
| Molecular Weight | 150.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Chloro-4-methoxy-1,2,5-thiadiazole.
CATO supplies 3-Chloro-4-methoxy-1,2,5-thiadiazole (CAS 5728-16-5), a certified reference material (molecular formula C3H3ClN2OS, MW 150.59 g/mol) for analytical method development and quality control.
Structurally, 3-Chloro-4-methoxy-1,2,5-thiadiazole (C3H3ClN2OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 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 150.59 g/mol, it falls into the medium-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Chloro-4-methoxy-1,2,5-thiadiazole 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.
Physical & Chemical Properties
| Molecular Formula | C3H3ClN2OS |
| Molecular Weight | 150.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- (5-Chloro-1,2,3-thiadiazol-4-yl)methanol (CAS 926207-15-0)
- (5-Chloro-1,3,4-thiadiazol-2-yl)methanol (CAS 912669-58-0)
- 1-Chloro-4-ethynyl-2-methylbenzene (CAS 1204394-34-2)
- 2-Chloro-1-ethynyl-3-methylbenzene (CAS 1233501-73-9)
- 2-Chloro-1-ethynyl-4-methylbenzene (CAS 1233520-92-7)
- (2S)-2-chloro-3-methylpentanoic acid (CAS 1237830-70-4)
- 1-Chloro-2-(prop-2-yn-1-yl)benzene (CAS 1312713-20-4)
- 2-Chloro-4-ethynyl-1-methylbenzene (CAS 1338235-62-3)
Recommended Standards
- 5-(chloromethyl)-2,3-dihydro-1,3,4-thiadiazol-2-one (CAS 84352-71-6)
- (4-chlorooxan-4-yl)methanol (CAS 100506-90-9)
- 2-Chloro-2-Fluorocyclohexanone (CAS 35365-22-1)
- 1-(Chloromethyl)-4-ethynylbenzene (CAS 10601-98-6)
- tert-Butyl 4-(1-aminoethyl)piperidine-1-carboxylate (CAS 455267-29-5)
- Dimethylsilane (with cylinder) (CAS 1111-74-6)
- 6-Amino-5-(cyanomethyl)-2-(difluoromethyl)nicotinonitrile (CAS 1806842-81-8)
- 1-Bromo-3,5-bis[(1,1-dimethylethyl)thio]benzene (CAS 795274-44-1)
- 6-Iodochroman-4-amine (CAS 676133-39-4)
- 1-Bromo-2-chloro-4,5-dimethylbenzene (CAS 500536-40-3)
- Ethyl 4-amino-3-fluoro-5-((2-methoxyethyl)amino)benzoate (CAS 2529829-40-9)
- tert-Butyl 4-(2-chlorothiazol-5-yl)-3-isopropyl-2-oxo-2,3-dihydro-1H-imidazole-1-carboxylate (CAS 1956340-55-8)
- N1-Methylcyclohexane-1,2-diamine (CAS 38361-99-8)
- C-Peptide (Proinsulin) (CAS 59112-80-0)
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