Description

4-Hydroxy-3-Nitrobenzaldehyde is a versatile aromatic aldehyde derivative that serves as a critical synthetic intermediate in advanced organic chemistry. Its unique structure, featuring both a phenolic hydroxyl and a nitro group ortho to the formyl functionality, makes it a valuable building block for constructing complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with nitro- or amino-benzaldehyde backbones.
• Agrochemical Synthesis: Used in the manufacture of herbicides, pesticides, and plant growth regulators where its nitro group can be further reduced or transformed.
• Dye and Pigment Manufacturing: Serves as a starting material for azo dyes and other complex colorants due to its reactive aldehyde and hydroxyl groups.
• Ligand and Chelating Agent Precursor: Utilized in coordination chemistry to create Schiff base ligands for metal complexes and catalysts.
• Organic Synthesis Building Block: Employed in multi-step syntheses for heterocyclic compounds, including benzimidazoles, quinazolines, and other fused ring systems.
• Research and Development: A valuable reagent in academic and industrial R&D labs for exploring new chemical reactions and material properties.

Basic Information

Product Name	4-Hydroxy-3-Nitrobenzaldehyde
CAS No.	3011-34-5
Molecular Formula	C7H5NO4
Molecular Weight	167.12 g/mol
Synonyms	3-Nitro-4-hydroxybenzaldehyde; 4-Hydroxy-3-nitrobenzaldehyde; 3-Nitro-4-formylphenol; 3-Nitro-p-hydroxybenzaldehyde; 4-Formyl-2-nitrophenol; 2-Nitro-4-hydroxybenzaldehyde; 4-Hydroxy-3-nitrobenzenecarboxaldehyde; NSC 403697
EINECS	221-138-7

Quality Control

Our 4-Hydroxy-3-Nitrobenzaldehyde is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and melting point determination, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere for long-term storage). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	124 - 128 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.