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1-phenylsulfonyl-3-(2-hydroxynaphthylazo)-Δ2-pyrazoline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

71998-95-3

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71998-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71998-95-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,9 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71998-95:
(7*7)+(6*1)+(5*9)+(4*9)+(3*8)+(2*9)+(1*5)=183
183 % 10 = 3
So 71998-95-3 is a valid CAS Registry Number.

71998-95-3Downstream Products

71998-95-3Relevant academic research and scientific papers

Reaction of 3-aminopyrazolines with nitrous acid. Stable nonaromatic diazonium salts.

Gorelik, M. V.,Titova, S. P.,Rybinov, V. I.

, p. 1143 - 1148 (2007/10/02)

During the action of a constant excess of nitrous acid on 1-phenyl-3-amino-Δ2-pyrazoline the initially formed cation-radical does not undergo dimerization but changes into a 1-phenyl-3-pyrazolediazonium salt.In the case of 1-(p-tolyl)-3-amino-Δ

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