Pentanal-2,4-dinitrophenylhydrazone CAS 2057-84-3
| CAS No. | 2057-84-3 |
| Molecular Formula | C11H14N4O4 |
| Molecular Weight | 266.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pentanal-2,4-dinitrophenylhydrazone 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.
Pentanal-2,4-dinitrophenylhydrazone (CAS 2057-84-3), molecular formula C11H14N4O4 and molecular weight 266.25 g/mol, is a CATO reference standard with documented purity and traceability.
Pentanal-2,4-dinitrophenylhydrazone (C11H14N4O4) contains an amino-acid-derived structure, 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H14N4O4 |
| Molecular Weight | 266.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1957 |
| Nitrogen Atoms | 4 |
Related Pentanal Standards
Recommended Standards
- Ataluren Impurity 7 (CAS 775303-92-9)
- Isovaleraldehyd-2,4-dinitrophenylhydrazone (CAS 2256-01-1)
- Piperazine Impurity 64 (CAS 5854-18-2)
- (3R)-3-Hydroxy-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (CAS 105601-88-5)
- Diethyl 6-bromo-5-hydroxypyridine-3,4-dicarboxylate (CAS 1421827-20-4)
- (3S,5S)-5-methylpiperidine-3-carboxylic acid (CAS 1932141-81-5)
- Benzyl7-oxo-5-azaspiro[2.4]heptane-5-carboxylate (CAS 400841-10-3)
- 3-Iodoisoquinoline (CAS 66728-97-0)
- 4-Methoxy-N-(4-methoxyphenyl)-N-(4-nitrophenyl)aniline (CAS 20440-91-9)
- 2-Hydrazinylbenzenesulfonic acid (CAS 91-26-9)
- methyl 5-hydroxy-2-methylbenzoate (CAS 73505-48-3)
- 1-ethyl-6,7-difluoro-1,2,3,4-tetrahydroisoquinoline (CAS 1526474-80-5)
- 3-Hydroxyindole (CAS 480-93-3)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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