Diethyl 2-((2-(o-tolyl)hydrazinyl)methylene)malonate CAS 933242-59-2
| CAS No. | 933242-59-2 |
| Molecular Formula | C15H20N2O4 |
| Molecular Weight | 292.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Diethyl 2-((2-(o-tolyl)hydrazinyl)methylene)malonate.
CATO supplies Diethyl 2-((2-(o-tolyl)hydrazinyl)methylene)malonate (CAS 933242-59-2), a certified reference material (molecular formula C15H20N2O4, MW 292.33 g/mol) for analytical method development and quality control.
Diethyl 2-((2-(o-tolyl)hydrazinyl)methylene)malonate (C15H20N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C15H20N2O4 |
| Molecular Weight | 292.33 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- (S)-6-(1-Amino-2-methylpropyl)pyridin-3-amine (CAS 1187931-14-1)
- N-[(1R)-2'-Amino[1,1'-binaphthalen]-2-yl]-N'-[3,5-bis(trifluoromethyl)phenyl]thiourea (CAS 1190422-05-9)
- 1-(4-Nitrophenyl)pyrrolidine-2-carboxylic acid (CAS 1301738-56-6)
- (5-Chloro-2-nitrophenyl)(4-(2-fluorophenyl)piperazin-1-yl)methanone (CAS 478249-15-9)
- 1-(2-Methoxyethyl)-6-methyl-2-thioxo-2,3-dihydropyrido[2,3-d]pyrimidin-4(1h)-one (CAS 1018142-68-1)
- HA Peptide (CAS 92000-76-5)
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