5-(1-Hydroxyethyl)pyrazolidin-3-one CAS 149703-98-0
| CAS No. | 149703-98-0 |
| Molecular Formula | C5H10N2O2 |
| Molecular Weight | 130.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(1-Hydroxyethyl)pyrazolidin-3-one is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(1-Hydroxyethyl)pyrazolidin-3-one (CAS 149703-98-0), molecular formula C5H10N2O2 and molecular weight 130.15 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-(1-Hydroxyethyl)pyrazolidin-3-one is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 130.15 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.
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), 5-(1-Hydroxyethyl)pyrazolidin-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 | C5H10N2O2 |
| Molecular Weight | 130.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 2 |
Related Hydroxyethyl Standards
- 1-(1-Hydroxyethyl)imidazolidin-2-one (CAS 109674-15-9)
- 4-(1-Hydroxyethyl)pyrazolidin-3-one (CAS 124667-24-9)
- 4-(2-Hydroxyethyl)imidazolidin-2-one (CAS 161663-36-1)
- 5-(2-Hydroxyethyl)pyrazolidin-3-one (CAS 183282-56-6)
- 1-(2-Hydroxyethyl)cyclopropanecarboxylic Acid (CAS 1520462-70-7)
- 3-(2-hydroxyethyl)oxolan-2-one (CAS 78344-32-8)
- 2-Hydroxyethyl Methacrylate (CAS 868-77-9)
- 1-(2-Hydroxyethyl)cyclopentan-1-ol (CAS 73089-93-7)
Recommended Standards
- (2S)-piperazine-2-carboxylic acid (CAS 147650-70-2)
- 2-Nitropyridine (CAS 15009-91-3)
- 5-Methyl-3<I>H</I>-imidazole-4-carboxylic acid (CAS 1457-59-6)
- 3-(methylamino)oxetane-3-carboxamide (CAS 1511209-03-2)
- 2-Amino-N-ethyl-5-fluorobenzene-1-sulfonamide (CAS 1026183-64-1)
- (4-Methoxy-1-naphthyl)methanol (CAS 16820-54-5)
- 2-Acetamido-3-hydroxybenzoate (CAS 99060-57-8)
- 1,3-Diethylpiperazine (CAS 1500023-54-0)
- 4-(4-Chloro-2-(2-chlorobenzoyl)phenyl)pyrimidine-5-carbonitrile (CAS 87999-64-2)
- 5-Chloro-2-(p-tolyl)quinazolin-4(1H)-one (CAS 83800-91-3)
- N-((4-Amino-2-methylpyrimidin-5-yl)methyl)nicotinamide (CAS 105801-73-8)
- 2,7-Dichlorothiazolo[5,4-c]pyridine (CAS 884860-61-1)
- 2-(2-Morpholinophenoxy)ethan-1-amine (CAS 1521926-80-6)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
Why CATO?
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