4-(2-Hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboximidamide CAS 210417-12-2
| CAS No. | 210417-12-2 |
| Molecular Formula | C7H12N4O2 |
| Molecular Weight | 184.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
4-(2-Hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboximidamide (CAS 210417-12-2), molecular formula C7H12N4O2 and molecular weight 184.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-(2-Hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboximidamide (C7H12N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 184.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H12N4O2 |
| Molecular Weight | 184.20 g/mol |
| Appearance | Off-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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2017 |
| Nitrogen Atoms | 4 |
Related Hydroxyethyl Standards
- 1-(2-Hydroxyethyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 1052561-82-6)
- 5-Ethyl-1-(2-hydroxyethyl)-1h-pyrazole-4-carboxylic acid (CAS 1152571-27-1)
- 3-Ethyl-1-(2-hydroxyethyl)-1H-pyrazole-4-carboxylic acid (CAS 1171994-87-8)
- Ethyl 1-(2-hydroxyethyl)-1H-imidazole-4-carboxylate (CAS 749158-62-1)
- Methyl 2-(1-hydroxyethyl)-1-methyl-1H-imidazole-5-carboxylate (CAS 2734876-12-9)
- 2-(2-Hydroxyethyl)bicyclo[2.2.1]heptane-2-carboxylic acid (CAS 1559804-23-7)
- methyl 2-[3-(2-hydroxyethyl)-1-bicyclo[1.1.1]pentanyl]acetate (CAS 2168032-82-2)
- 1-(2-Hydroxyethyl)-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (CAS 1021245-58-8)
Recommended Standards
- 3-Amino-7-methylquinoxaline-2-carbonitrile (CAS 444807-95-8)
- 4,4'-Azopyridine (CAS 2632-99-7)
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- 4-[(1H-imidazol-1-yl)amino]benzonitrile (CAS 854602-59-8)
- 2-Hydrazinylterephthalic acid hydrochloride (CAS 1049750-48-2)
- tert-Butyl (6-bromo-2-nitropyridin-3-yl)carbamate (CAS 1211333-11-7)
- tert-Butyl 4-isothiocyanatopiperidine-1-carboxylate (CAS 496954-55-3)
- 1-(4-Isopropylbenzyl)-1H-pyrazol-5-amine (CAS 3524-29-6)
- (E)-3-(2-chlorophenyl)-N-(4-(N-(3,4-dimethylisoxazol-5-yl)sulfamoyl)phenyl)acrylamide (CAS 873307-19-8)
- 2,5-Dichloro-4-fluorobenzenethiol (CAS 1349718-28-0)
- 7-Amino-6-(pyrrolidin-1-ylmethyl)quinoline-5,8-dione (CAS 61324-54-7)
- 5,7-diiodo-1,3-dihydro-2-benzofuran-4-amine (CAS 2827057-28-1)
- 3-Fluorobenzophenone (CAS 345-69-7)
- semaglutide (CAS 782487-28-9)
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