5165-81-1 Usage
Description
Naphthol AS-RS is a shallow brown powder that is insoluble in water. It is primarily known for its high affinity to cotton and is used in various applications due to its good fastness properties.
Uses
Used in Textile Industry:
Naphthol AS-RS is used as a dyestuff for cotton, providing good fastness and color retention. Its high affinity to cotton makes it a preferred choice in the textile industry for dyeing processes.
Used in Chemical Industry:
In the chemical industry, naphthol AS-RS is used as a component in the production of polyvinyl alcohol (PVA) and glue. Its good fastness properties contribute to the overall performance and durability of these products.
Preparation
4-Chloro-2-methoxy-5-methylbenzenamine?in pyridine with?N-(4-chloro-2-methoxy-5-methylphenyl)-3-hydroxy-2-naphthamide condensation.
Check Digit Verification of cas no
The CAS Registry Mumber 5165-81-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,6 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5165-81:
(6*5)+(5*1)+(4*6)+(3*5)+(2*8)+(1*1)=91
91 % 10 = 1
So 5165-81-1 is a valid CAS Registry Number.
5165-81-1Relevant articles and documents
Fluorescent substrates for potential use in enzyme-linked immunosorbent assay of membrane-bound nucleic acids
Fujita, Satoshi,Momiyama, Masayoshi,Kondo, Yasumitsu,Kagiyama, Naoto,Hori, Samuel H.,Toru, Takeshi
, p. 1347 - 1353 (2007/10/02)
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.