5-(2-Aminoethyl)-2,3-dihydro-1h-pyrazol-3-one dihydrochloride CAS 66643-75-2
| CAS No. | 66643-75-2 |
| Molecular Formula | C5H9N3O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(2-Aminoethyl)-2,3-dihydro-1h-pyrazol-3-one dihydrochloride (C5H9N3OHCl) 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.
CATO supplies 5-(2-Aminoethyl)-2,3-dihydro-1h-pyrazol-3-one dihydrochloride (CAS 66643-75-2), a certified reference material (molecular formula C5H9N3OHCl, MW 163.60 g/mol) for analytical method development and quality control.
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), 5-(2-Aminoethyl)-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 | C5H9N3O 2*HCl |
| Molecular Weight | 163.60 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.) | 1976 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Aminoethyl Standards
- N-(2-Aminoethyl)oleamide phosphate (CAS 100021-80-5)
- Methyl 3-(2-aminoethyl)-4-methylbenzoate (CAS 1000551-41-6)
- 2-(2-Aminoethyl)-4-fluoro-N,N-dimethylaniline (CAS 1000551-95-0)
- 2-(2-Aminoethyl)-6-bromo-4-chlorophenol (CAS 1000575-19-8)
- N-(2-aminoethyl)-1-methyl-1H-pyrrole-2-carboxamide (CAS 1000931-92-9)
- n-(2-Aminoethyl)-1-methyl-4-(morpholine-4-sulfonyl)-1h-pyrrole-2-carboxamide (CAS 1000932-72-8)
- 4-[(2-aminoethyl)sulfamoyl]-1-methyl-1h-pyrrole-2-carboxamide (CAS 1000932-88-6)
- n-(2-Aminoethyl)-4,5-dibromo-1-methyl-1h-pyrrole-2-carboxamide (CAS 1000933-11-8)
Recommended Standards
- 3',6-Dibromo-9-phenyl-9H-4,9'-bicarbazole (CAS 1613043-67-6)
- 5-(4-Methyl-2-nitrophenyl)furan-2-carboxylic acid (CAS 55377-91-8)
- 2-(3-Hydroxy-2,5-dioxotetrahydrofuran-3-yl)acetic acid (CAS 24555-16-6)
- 4-(Dimethoxymethyl)-N-methylpyrimidin-2-amine (CAS 180869-38-9)
- 1-Bromo-3,5-bis(trifluoromethoxy)benzene (CAS 1010101-95-7)
- 1-((3-(tert-Butyl)-4-methoxyphenyl)sulfonyl)azepane (CAS 898646-59-8)
- N-(4-methylbenzyl)piperidin-3-amine hydrochloride (CAS 1353955-95-9)
- 3-(1H-Pyrrolo[2,3-b]pyridin-5-yl)aniline (CAS 611205-04-0)
- 3-Formyl-2-methoxybenzoic acid (CAS 1289170-62-2)
- D-Lys16-Tirzepatide (CAS CATO-CPTD788918)
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