Description

2-Naphthalenesulfonic acid, 4-hydroxy-7-(methylamino)- (CAS No. 22346-43-6) is a high-purity sulfonic acid derivative extensively utilized in chemical synthesis and industrial applications. With the molecular formula C₁₁H₁₁NO₄S and IUPAC name 4-hydroxy-7-(methylamino)naphthalene-2-sulfonic acid, this compound is characterized by its naphthalene backbone functionalized with hydroxy, methylamino, and sulfonic acid groups. It is commonly referred to as N-Methyl J acid or N-Methyl I acid in industry. This product is supplied as a fine powder or crystalline solid, ensuring optimal solubility and reactivity for specialized applications. Ideal for researchers and manufacturers, it serves as a key intermediate in dyes, pigments, and advanced organic synthesis. Store in a cool, dry place away from strong oxidizing agents to maintain stability.

Properties

• CAS Number: 22346-43-6
• Complexity: 364
• IUPAC Name: 4-hydroxy-7-(methylamino)naphthalene-2-sulfonic acid
• InChI: InChI=1S/C11H11NO4S/c1-12-8-2-3-10-7(4-8)5-9(6-11(10)13)17(14,15)16/h2-6,12-13H,1H3,(H,14,15,16)
• InChI Key: ZCNCWYFISJTFHB-UHFFFAOYSA-N
• Exact Mass: 253.04087901
• Molecular Formula: C11H11NO4S
• Molecular Weight: 253.28
• SMILES: CNC1=CC2=CC(=CC(=C2C=C1)O)S(=O)(=O)O
• Topological: 95
• Monoisotopic Mass: 253.04087901
• Synonyms: 22346-43-6, 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid, N-Methyl J acid, N-Methyl I acid, Kyselina N-methyl-I, Kyselina N-methyl-I [Czech], 2-NAPHTHALENESULFONIC ACID, 4-HYDROXY-7-(METHYLAMINO)-, EINECS 244-924-4, BRN 2656883, Kyselina 2-methylamino-5-naftol-7-sulfonova [Czech], DTXSID1066782, Kyselina 2-methylamino-5-naftol-7-sulfonova, DTXCID7036668, 4-hydroxy-7-(methylamino)naphthalene-2-sulfonic acid, 4-hydroxy-7-methylamino-2-Naphthanlenesulfonicacid, MFCD00128846, 4-Hydroxy-7-(methylamino)naphthalene-2-sulphonic acid, 2-(N-methylamino)-5-hydroxynaphthalene-7-sulfonic acid, CBMicro_015600, FJR73QHJ2R, 4-Hydroxy-7-methylamino-2-naphthalenesulfonicacid, SCHEMBL1374756, CHEMBL1269251, ZCNCWYFISJTFHB-UHFFFAOYSA-N, AKOS015900261, AS-12540, FH149155, BIM-0015620.P001, CS-0336362, NS00027135, 4-hydroxy-7-(methylamino)naphthalene-2-sulfonicacid, 1-Hydroxy-6-(methylamino)-3-naphthalenesulfonic acid, 4-hydroxy-7-(methylamino)-2-naphthalenesulfonic acid, 5-Hydroxy-2-(methylamino)-7-naphthalenesulfonic acid

Application

4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid is primarily employed as a crucial intermediate in the synthesis of azo dyes and pigments, contributing to vibrant colorants for textiles and inks. Its sulfonic acid group enhances water solubility, making it valuable in dye formulations requiring high stability and brightness. Researchers also utilize this compound in organic synthesis for constructing complex naphthalene-based structures. Additionally, it finds niche applications in analytical chemistry as a derivatization agent for detecting specific functional groups.

Safety and Hazards

GHS Hazard Statements

• Not Classified
• Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website.

Hazard Classes and Categories

• Not Classified

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