3-Chloro-6-methylpyrazin-2(3H)-one CAS 89283-34-1
| CAS No. | 89283-34-1 |
| Molecular Formula | C5H5ClN2O |
| Molecular Weight | 144.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 144.56 g/mol gives 3-Chloro-6-methylpyrazin-2(3H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Chloro-6-methylpyrazin-2(3H)-one (CAS 89283-34-1), molecular formula C5H5ClN2O and molecular weight 144.56 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloro-6-methylpyrazin-2(3H)-one (C5H5ClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 3-Chloro-6-methylpyrazin-2(3H)-one 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 | C5H5ClN2O |
| Molecular Weight | 144.56 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.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-5-methylpyrimidin-2(1H)-one (CAS 101080-24-4)
- 4-Chloro-2-methylpyrimidin-5-ol (CAS 103660-23-7)
- 5-Chloro-4-methyl-2,3-dihydropyridazin-3-one (CAS 104566-45-2)
- 2-Chloro-5-(hydroxymethyl)pyrimidine (CAS 1046816-75-4)
- 4-Chloro-5-methyl-1H-pyrazole-3-carbaldehyde (CAS 1050642-24-4)
- 5-Chloro-3-methylpyrazin-2(1H)-one (CAS 105985-18-0)
- 5-Chloro-4-methylpyrimidine 1-oxide (CAS 114969-55-0)
- 5-Chloro-4-methoxypyrimidine (CAS 114969-94-7)
Recommended Standards
- 3-Chloro-2-(hydroxymethyl)pyrazine (CAS 89283-32-9)
- 3-Chloro-6-methylpyridazin-4-ol (CAS 22390-52-9)
- 3-Chloro-1-methyl-1H-pyrazole-5-carbaldehyde (CAS 221276-16-0)
- 3-Chloro-pyrazine-2,6-diamine (CAS 794497-98-6)
- 2,2,2-Trichloro-1-(4,5,6,7-tetrahydro-1H-indol-2-yl)ethanone (CAS 1346672-30-7)
- 3-Methylimidazo[1,2-a]pyridin-2(3H)-one (CAS 744146-23-4)
- 2-[2-(2,3-Dichlorophenoxy)ethyl]piperidinehydrochloride (CAS 1220018-80-3)
- Ethyl 5-(3-fluorophenyl)-1H-pyrazole-3-carboxylate (CAS 943542-76-5)
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- (3S,4S)-1-benzyl-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid (CAS 111138-64-8)
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