3-chloro-1-methyl-1,2-dihydropyrazin-2-one CAS 200562-22-7
| CAS No. | 200562-22-7 |
| Molecular Formula | C5H9ClN2O |
| Molecular Weight | 148.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-chloro-1-methyl-1,2-dihydropyrazin-2-one is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-chloro-1-methyl-1,2-dihydropyrazin-2-one (CAS 200562-22-7), a certified reference material (molecular formula C5H9ClN2O, MW 148.59 g/mol) for analytical method development and quality control.
Structurally, 3-chloro-1-methyl-1,2-dihydropyrazin-2-one (C5H9ClN2O) contains an amide group, a hydroxyl group, an ether linkage, 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 148.59 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.
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-1-methyl-1,2-dihydropyrazin-2-one 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 | C5H9ClN2O |
| Molecular Weight | 148.59 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
- 6-chloro-2-methyl-2,3-dihydropyridazin-3-one (CAS 10071-38-2)
- 6-chloro-3-methyl-pyrimidin-4-one (CAS 101079-62-3)
- 2-(4-chloro-1H-pyrazol-1-yl)acetaldehyde (CAS 1015939-57-7)
- 6-chloro-3-methyl-1H-pyrazin-2-one (CAS 105985-19-1)
- 5-chloro-1-methyl-pyrazole-4-carbaldehyde (CAS 117007-77-9)
- 2-(5-chloro-1H-pyrazol-1-yl)acetaldehyde (CAS 1260642-65-6)
- Methyl 2-chloro-2-cyclopropylacetate (CAS 139132-18-6)
- 2-Chloro-1-(tetrahydrofuran-2-yl)ethanone (CAS 141060-98-2)
Recommended Standards
- 2-methylpyrazole-3-carbonyl chloride (CAS 84547-59-1)
- 3-Chloro-2,2-dimethylbut-3-enoic acid (CAS 56663-75-3)
- 2-chloropyrimidine-5-carbaldehyde (CAS 933702-55-7)
- 3-chloro-5-methyl-1H-pyrazin-2-one (CAS 89283-33-0)
- 3-Methoxy-4-(methylsulfonyl)benzaldehyde (CAS 1415609-52-7)
- 2-(4-Fluorophenyl)-5-methylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 886503-14-6)
- 2,3,5,6-Tetrafluoro-4-(trifluoromethyl)benzonitrile (CAS 15895-68-8)
- 1-(iodomethyl)-2-oxabicyclo[2.1.1]hexane (CAS 1935986-52-9)
- 2,2-Dimethyl-1,3-dinitropropane (CAS 762-98-1)
- 4-(3-(Trifluoromethyl)phenyl)pyridine (CAS 5957-98-2)
- (1-Methyl-1H-pyrazole-5-carbonyl)glycine (CAS 300834-31-5)
- Fezolinetant Impurity 32 (CAS CATO-C4X-327032)
- 1-Chloro-6-methoxyphthalazine (CAS 256443-70-6)
- Insulin Degludec Impurity 18 (CAS CATO-C4X-215718)
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