5274-70-4 Benzaldehyde, 2-hydroxy-3-nitro- 3-Nitrosalicylaldehyde EINECS 226-098-7 2-Hydroxy-3-nitrobenzaldehyde 3-Nitro-2-hydroxybenzaldehyde NSC 38026 Salicylaldehyde, 3-nitro- CAS 5274-70-4
| CAS No. | 5274-70-4 |
| Molecular Formula | C7H11NO4 |
| Molecular Weight | 173.17 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 5274-70-4 Benzaldehyde, 2-hydroxy-3-nitro- 3-Nitrosalicylaldehyde EINECS 226-098-7 2-Hydroxy-3-nitrobenzaldehyde 3-Nitro-2-hydroxybenzaldehyde NSC 38026 Salicylaldehyde, 3-nitro-.
5274-70-4 Benzaldehyde, 2-hydroxy-3-nitro- 3-Nitrosalicylaldehyde EINECS 226-098-7 2-Hydroxy-3-nitrobenzaldehyde 3-Nitro-2-hydroxybenzaldehyde NSC 38026 Salicylaldehyde, 3-nitro- (CAS 5274-70-4), molecular formula C7H11NO4 and molecular weight 173.17 g/mol, is a CATO reference standard with documented purity and traceability.
5274-70-4 Benzaldehyde, 2-hydroxy-3-nitro- 3-Nitrosalicylaldehyde EINECS 226-098-7 2-Hydroxy-3-nitrobenzaldehyde 3-Nitro-2-hydroxybenzaldehyde NSC 38026 Salicylaldehyde, 3-nitro- (C7H11NO4) 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 | C7H11NO4 |
| Molecular Weight | 173.17 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 methanol, ethanol, DMSO, water |
| 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.) | 1958 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- Semaglutide-d15 (CAS 910463-68-2(non-labelled))
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