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163983-04-8

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163983-04-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163983-04-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,9,8 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 163983-04:
(8*1)+(7*6)+(6*3)+(5*9)+(4*8)+(3*3)+(2*0)+(1*4)=158
158 % 10 = 8
So 163983-04-8 is a valid CAS Registry Number.

163983-04-8Relevant articles and documents

Synthesis of Insert Antifeedants Related to Azadiradione

Mateos, A. Fernandez,Barba, A. Lopez,Coca, G. Pascual,Gonzalez, R. Rubio,Hernandez, C. Tapia

, p. 1381 - 1383 (1997)

An efficient synthesis of a model insect antifeedant based on the C, D and E rings of the limonoid azadiradione has been developed. (8 steps 18percent overall yield).The key steps were an electrocyclization induced by acids 4->5 and a dyotropic rearran

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