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19959-24-1

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19959-24-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19959-24-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,5 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19959-24:
(7*1)+(6*9)+(5*9)+(4*5)+(3*9)+(2*2)+(1*4)=161
161 % 10 = 1
So 19959-24-1 is a valid CAS Registry Number.

19959-24-1Downstream Products

19959-24-1Relevant articles and documents

Reactions of 2-Isocyanatobenzoyl Chlorides with Diazomethane: Synthesis of 3-Diazo-1,2,3,4-tetrahydro-2,4-dioxo-quinolines

Misra, B. K.,Rao, Y. R.,Mahapatra, S. N.

, p. 562 - 564 (2007/10/02)

2-Isocyanatobenzoyl chlorides (I) react with diazomethane through chloroformyl group affording o-isocyanatodiazoactophenones (IV) wich immidiately undergo cyclization to 3-diazo-1,2,3,4-tetrahydro-2,4-dioxo-quinolines (II).However, treatment of I with diazoethane results in the formation of isatoic acid 2-isopropylester (VII) and diisopropylester (VIII) by the action of isopropyl alcohol present in the diazoethane reaction.

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