Description

7-(4-Aminobenzamido)-4-Hydroxynaphthalene-2-Sulfonic Acid is a specialized organic intermediate featuring a naphthalene core functionalized with sulfonic acid, hydroxyl, and aminobenzamido groups. This unique structure makes it a valuable precursor in the synthesis of complex dyes, pigments, and functional materials where specific light absorption and chemical reactivity are required. It is primarily utilized by manufacturers in the fine chemical, dye, and advanced material research sectors.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing azo dyes, acid dyes, and other complex colorants, particularly for textiles and inks.
• Functional Material Synthesis: Used in the research and development of organic semiconductors, light-harvesting materials, and nonlinear optical (NLO) materials.
• Chemical Research Reagent: Serves as a versatile intermediate in academic and industrial organic synthesis for creating novel aromatic compounds.
• Pharmaceutical Intermediate: Potential use in the synthesis of pharmacologically active molecules due to its multifunctional aromatic structure.
• Analytical Chemistry: May be employed as a derivatization agent or a standard in chromatographic analysis.

Basic Information

Product Name	7-(4-Aminobenzamido)-4-Hydroxynaphthalene-2-Sulfonic Acid
CAS No.	119-77-7
Molecular Formula	C₁₇H₁₄N₂O₅S
Molecular Weight	358.37 g/mol
Synonyms	4-Amino-N-(4-hydroxy-7-sulfo-2-naphthyl)benzamide; 7-(4-Aminobenzoylamino)-4-hydroxy-2-naphthalenesulfonic Acid; 4-Hydroxy-7-[(4-aminobenzoyl)amino]-2-naphthalenesulfonic Acid; C.I. 37515; Acid Yellow 76 intermediate; 4-Hydroxy-7-[(4-aminobenzoyl)amino]naphthalene-2-sulfonic Acid; 7-[(4-Aminophenyl)carbonyl]amino]-4-hydroxy-2-naphthalenesulfonic Acid
EINECS	204-350-7

Quality Control

Our 7-(4-Aminobenzamido)-4-Hydroxynaphthalene-2-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). The compound may be hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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