6-chloro-5-methoxy-2,3-dihydropyridazin-3-one CAS 114333-03-8
| CAS No. | 114333-03-8 |
| Molecular Formula | C5H9ClN2O2 |
| Molecular Weight | 164.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
6-chloro-5-methoxy-2,3-dihydropyridazin-3-one (CAS 114333-03-8) is a high-purity analytical reference standard with the molecular formula C5H9ClN2O2 and a molecular weight of 164.59 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 6-chloro-5-methoxy-2,3-dihydropyridazin-3-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 6-chloro-5-methoxy-2,3-dihydropyridazin-3-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 | C5H9ClN2O2 |
| Molecular Weight | 164.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
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Recommended Standards
- n'-Acetyl-2-chloropropanehydrazide (CAS 1153768-56-9)
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- (4-Chlorobutanoyl)urea (CAS 1208680-83-4)
- 6-chloropyridazine-4-carboxylic acid (CAS 1256794-24-7)
- 1-Aminoindolin-2-one (CAS 36149-75-4)
- 1-(Allyloxy)-2-propanol (CAS 21460-36-6)
- 4-Fluoro-2,3-dihydro-1-benzofuran-3-amine hydrochloride (CAS 1384265-54-6)
- 2-Phenyl-5-(2-phenylmethanesulfonylphenyl)-1,3,4-oxadiazole (CAS 339104-06-2)
- (1-(2,6-Dichlorobenzyl)piperidin-2-yl)methanamine hydrochloride (CAS 1289387-77-4)
- 2,5-Dipentylfuran (CAS 89834-67-3)
- 5-Bromo-N-(2-oxoazepan-3-yl)thiophene-3-carboxamide (CAS 1214114-60-9)
- PBDE 209 (CAS 1163-19-5)
- 3-(3-Hydrazinyl-5-oxo-2,5-dihydro-1,2,4-triazin-6-yl)propanoic acid (CAS 536728-03-7)
- Semaglutide Impurity 1(OtBu-Ste-D-γGlu(OtBu)-AEEA-AEEA-OH) (CAS CATO-C4X-22261)
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