3-chloro-4-methylpyridazine CAS 68206-04-2
| CAS No. | 68206-04-2 |
| Molecular Formula | C5H5ClN2 |
| Molecular Weight | 128.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-chloro-4-methylpyridazine (CAS 68206-04-2), molecular formula C5H5ClN2 and molecular weight 128.56 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 3-chloro-4-methylpyridazine is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 128.56 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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-methylpyridazine 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 | C5H5ClN2 |
| Molecular Weight | 128.56 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
- 4-chloro-3-methyl-pyridazine (CAS 101346-01-4)
- 4-Chloro-1-vinyl-1H-pyrazole (CAS 1219568-16-7)
- 2-Chloro-4-methylpyrimidine (CAS 13036-57-2)
- 2-Chloro-5-methylpyrazine (CAS 59303-10-5)
- 2-Chloro-5-methylpyrimidine (CAS 22536-61-4)
- 2-Chloro-5-vinylfuran (CAS 63269-95-4)
- 3-chloro-5-methylpyridazine (CAS 89283-31-8)
- 4-Chloro-5-methylpyrimidine (CAS 51957-32-5)
Recommended Standards
- 3-(Chloromethyl)pyridazine (CAS 41227-72-9)
- 2-chloromethyl-pyrimidine (CAS 54198-88-8)
- 4-(Chloromethyl)pyrimidine (CAS 54198-81-1)
- 2-Chloroaniline- (CAS 36238-55-8)
- (cis-1-Benzylpyrrolidine-2,5-diyl)dimethanol (CAS 269077-39-6)
- Eriochrome cyanine R indicator (C.I. 43820) (CAS 3564-18-9)
- 4-(1-Methyl-1H-pyrazol-3-yl)benzenesulfonyl chloride (CAS 916766-81-9)
- 2-(4-Chloro-2-fluorophenyl)butanoic acid (CAS 1521213-15-9)
- 2-({[4-(Benzyloxy)phenyl]methyl}({[4-(trifluoromethyl)phenyl]methyl})amino)-2-phenylacetic acid (CAS 1253527-64-8)
- 4,6-dimethylbenzene-1,3-diol (CAS 615-89-4)
- 2-(2-Bromoethyl)benzonitrile (CAS 101860-81-5)
- 2-(2,2,2-Trifluoroethyl)-1,3-thiazole-4-carboxylic acid (CAS 1179338-11-4)
- Spiro[3.3]hepta-1,5-diene-2,6-dicarboxylic acid (CAS 52097-95-7)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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