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1233495-40-3

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1233495-40-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233495-40-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,4,9 and 5 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1233495-40:
(9*1)+(8*2)+(7*3)+(6*3)+(5*4)+(4*9)+(3*5)+(2*4)+(1*0)=143
143 % 10 = 3
So 1233495-40-3 is a valid CAS Registry Number.

1233495-40-3Downstream Products

1233495-40-3Relevant articles and documents

A domino reaction of α,β-acetylenic λ-hydroxy nitriles with arenecarboxylic acids: An unexpected facile shortcut to 4-cyano-3(2 H)-furanones

Trofimov, Boris A.,Shemyakina, Olesya A.,Malkina, Anastasiya G.,Ushakov, Igor A.,Kazheva, Olga N.,Alexandrov, Grigorii G.,Dyachenko, Oleg A.

supporting information; experimental part, p. 3200 - 3203 (2010/10/03)

(Figure Presented) An unexpected facile domino reaction of α,β-acetylenic λ-hydroxy nitriles with arenecarboxylic acids (Et3N, MeCN, 20-25 °C, 48 h) affords 4-cyano-3(2H)-furanones in 67-86% yield. The reaction is triggered by the addition of a

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