4-amino-2,3-dihydro-1H-pyrazol-3-one dihydrochloride CAS 1808683-31-9
| CAS No. | 1808683-31-9 |
| Molecular Formula | C3H5N3O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 135.55 g/mol gives 4-amino-2,3-dihydro-1H-pyrazol-3-one dihydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-amino-2,3-dihydro-1H-pyrazol-3-one dihydrochloride (CAS 1808683-31-9), molecular formula C3H5N3OHCl and molecular weight 135.55 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 4-amino-2,3-dihydro-1H-pyrazol-3-one dihydrochloride is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 135.55 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.
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.
As a certified reference material (CRM), 4-amino-2,3-dihydro-1H-pyrazol-3-one dihydrochloride 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 | C3H5N3O 2*HCl |
| Molecular Weight | 135.55 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.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- 1-(5-Chloropyrimidin-2-yl)piperidine-2-carboxylic acid (CAS 1261230-12-9)
- 3-(3,5-dimethyl-4-propyl-1H-pyrazol-1-yl)-2-[(E)-2-(2-nitrophenyl)hydrazono]-3-oxopropanenitrile 477710-16-0 KS-00001TUZ (CAS 477710-16-0)
- (R)-2-(5-bromopyridin-2-yl)-4-isopropyl-4,5-dihydrooxazole (CAS 2757083-30-8)
- Methyl 3-acetyl-1H-indole-5-carboxylate (CAS 106896-59-7)
- (Asp28)-Exenatide trifluoroacetate salt (CAS 1678417-24-7)
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