4,5-Diamino-1-(2-hydroxyethyl)-1H-pyrazol-3(2H)-one CAS 175700-82-0
| CAS No. | 175700-82-0 |
| Molecular Formula | C5H10N4O2 |
| Molecular Weight | 158.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4,5-Diamino-1-(2-hydroxyethyl)-1H-pyrazol-3(2H)-one is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 158.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4,5-Diamino-1-(2-hydroxyethyl)-1H-pyrazol-3(2H)-one (CAS 175700-82-0), molecular formula C5H10N4O2 and molecular weight 158.16 g/mol, is a CATO reference standard with documented purity and traceability.
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 4,5-Diamino-1-(2-hydroxyethyl)-1H-pyrazol-3(2H)-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 | C5H10N4O2 |
| Molecular Weight | 158.16 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 4 |
Related Diamino Standards
- 2-((3,4-Diamino-1H-pyrazol-1-yl)oxy)ethanol (CAS 927417-33-2)
- 2-((4,5-Diamino-1H-pyrazol-1-yl)oxy)ethanol (CAS 927417-22-9)
- 5,6-Diamino-3-methyldihydropyrimidine-2,4(1H,3H)-dione (CAS 474096-64-5)
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- 5,6-Diamino-4-thioxo-3,4-dihydropyrimidin-2(1H)-one (CAS 40848-33-7)
Recommended Standards
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