137-52-0

Basic information

• Product Name: Naphtanilide EL
• Synonyms: N-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-Naphthalenecarboxamide;NAPTHOL AS-LC;NAPHTOL AS-LC;NAPHTHOL AS-CL;NAPHTHOL AS-CA;N-(5-chloro-2-methoxyphenyl)-3-hydroxy-2-naphthamide;2-Hydroxy-3-Naphthoyl-(2'-Amino-4'- Chloro)Aniline;2-Naphthalenecarboxamide-N-(5-chloro-2-methoxyphenyl)-3-hydroxy
• CAS NO: 137-52-0
• Molecular Formula: C₁₈H₁₄ClNO₃
• Molecular Weight: 327.77
• EINECS: 224-270-6
• Product Categories: Intermediates of Dyes and Pigments;Organics
• Mol File: 137-52-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 446.3 °C at 760 mmHg
• Flash Point: 223.7 °C
• Appearance: /
• Density: 1.384 g/cm³
• PKA: 8.69±0.40(Predicted)
• CAS DataBase Reference: Naphtanilide EL(CAS DataBase Reference)
• NIST Chemistry Reference: Naphtanilide EL(137-52-0)
• EPA Substance Registry System: Naphtanilide EL(137-52-0)

Safety Data

• Hazardous Substances Data: 137-52-0(Hazardous Substances Data)

Usage

Preparation

5-Chloro-2-methoxybenzenamine and 3-Hydroxy-2-naphthoic acid condensation.

Properties and Applications

white brown powder, melting point 218 ℃. Soluble in water and ethanol, soluble in lye. Mainly used for cotton fabrics, viscose and polyamide fiber dyeing, general is not used for cotton yarn and cotton cloth printing, the high affinity to cotton.

Upstream product

• 63429-99-2 ethyl 4-cloro-2-isothiocyanato-1-methoxybenzoate 
• 92-70-6 3-Hydroxy-2-naphthoic acid 
• 95-03-4 5-chloro-2-methoxyaniline 

Downstream Products

• 120-35-4 3-amino-4-methoxybenzoic acid phenylamide 
• 95-03-4 5-chloro-2-methoxyaniline 
• 18228-16-5 N-(5-chloro-2-methoxyphenyl)-3-(phosphonooxy)naphthalene-2-carboxamide 

Relevant articles and documents

Fluorescent substrates for potential use in enzyme-linked immunosorbent assay of membrane-bound nucleic acids

A number of phosphorylated fluorochromes were synthesized and tested for the alkaline phosphatase-linked fluorescence assay of membrane-bound nucleic acids. 3-Hydroxy-N-2′-biphenyl-2-naphthalenecarboxamide phosphate ester (HBNP) was found to be the most suitable for the assay. Nonfluorescent HBNP is hydrolyzed by phospholipase bound to the probe DNA to the highly fluorescent 3-hydroxy-N,2′-biphenyl-2-naphthalenecarboxamide (HBN). HBN is insoluble enough in aqueous medium to precipitate on the nylon membrane. Spots containing as little as 5 fg of λ DNA can be successfully detected on the membrane with HBNP.