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82205-80-9

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82205-80-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82205-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,2,0 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82205-80:
(7*8)+(6*2)+(5*2)+(4*0)+(3*5)+(2*8)+(1*0)=109
109 % 10 = 9
So 82205-80-9 is a valid CAS Registry Number.

82205-80-9Relevant articles and documents

SELECTIVE REACTIONS OF α-ARYL WITTIG REAGENTS WITH THE FORMYL MOIETY OF 4-FORMYLBENZOYL CHLORIDE

Waetjen, Frank,Dahl, Otto,Buchardt, Ole

, p. 4741 - 4744 (1982)

The benzylic Wittig reagents 2a, 2b and 2e react with 4-formylbenzoyl chloride 1 to give 40-60percent yields of products 3 derived from selective attack at the formyl group of 1; The same selectivity is not found for the non-stabilized ylids 2c and 2d or

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