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21919-09-5

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21919-09-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21919-09-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,1 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21919-09:
(7*2)+(6*1)+(5*9)+(4*1)+(3*9)+(2*0)+(1*9)=105
105 % 10 = 5
So 21919-09-5 is a valid CAS Registry Number.

21919-09-5Relevant articles and documents

NEW FACILE SYNTHESIS OF α-HYDROXYAMIDES:INTERMOLECULAR AND INTRAMOLECULAR CATALYSIS IN THE REACTION OF α-HYDROXYCARBOXYLIC ACIDS WITH N-SULFINYLAMINES.

Shin, Jai Moo,Kim, Yong Hae

, p. 1921 - 1924 (2007/10/02)

α-Hydroxycarboxylic acids (1) reacted with N-sulfinylanilines (2) to give the corresponding α-hydroxyanilides (5) in quantitative yields under mild condition: the reaction appears to involve intermolecular catalysis by the carboxylic acid moiety and intra

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