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1240489-63-7

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1240489-63-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240489-63-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,4,8 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1240489-63:
(9*1)+(8*2)+(7*4)+(6*0)+(5*4)+(4*8)+(3*9)+(2*6)+(1*3)=147
147 % 10 = 7
So 1240489-63-7 is a valid CAS Registry Number.

1240489-63-7Downstream Products

1240489-63-7Relevant articles and documents

Reactions of 2-Mono- and 2,6-Disubstituted 4-Pyrones with Phenylhydrazine as General Method for the Synthesis of 3-(N-Phenylpyrazolyl)Indoles

Obydennov,Usachev,Sosnovskikh

, p. 1388 - 1403 (2015)

Phenylhydrazine reacted regioselectively with 6-substituted 4-pyrone-2-carboxylic acids (or esters) in protic and aprotic solvents, leading to phenylhydrazones of 3-(3-R-1-phenylpyrazol-5-yl)- or 3-(5-R-1-phenylpyrazol-3-yl)pyruvic acids (or esters), resp

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