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140244-53-7

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140244-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140244-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,2,4 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 140244-53:
(8*1)+(7*4)+(6*0)+(5*2)+(4*4)+(3*4)+(2*5)+(1*3)=87
87 % 10 = 7
So 140244-53-7 is a valid CAS Registry Number.

140244-53-7Downstream Products

140244-53-7Relevant articles and documents

SYNTHESIS AND REACTIONS OF PHTHALIMIDO ALIPHATIC ACID AZIDES

Essawy, Samy A.,El-Aleem, A. H. Abd,Donia, S. G.,Metwally, R. N.

, p. 1243 - 1250 (2007/10/02)

Azides (2a-d), in the base catalyzed decomposition with aromatic amines yielded the corresponding N-aryl-N'-alkyl ureas (4a-t) via Curtius rearrangement.However, the base catalyzed decomposition of 2 with phenylhydrazine took place via azido group displacement to afford phthalimido aliphatic acid phenylhydrazides (8a-d).Decomposition of azides (2a-d) in neutral medium yielded the corresponding sym-N,N'-di-alkyl ureas (9a-d), via Curtius rearrangement.

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