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1256496-81-7

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1256496-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256496-81-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,4,9 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1256496-81:
(9*1)+(8*2)+(7*5)+(6*6)+(5*4)+(4*9)+(3*6)+(2*8)+(1*1)=187
187 % 10 = 7
So 1256496-81-7 is a valid CAS Registry Number.

1256496-81-7Relevant articles and documents

Synthesis of [2-13C, 4-13C]-(2R,3S)-catechin and [2-13C, 4-13C]-(2R,3R)-epicatechin

Sharma, Pradeep K.,He, Min,Romanczyk Jr., Leo J.,Schroeter, Hagen

, p. 605 - 612 (2011/08/21)

The first synthesis of doubly labeled, [2-13C, 4- 13C]-(2R,3S)-catechin 15 and [2-13C, 4- 13C]-(2R,3R)-epicatechin 18 starting from labeled 2-hydroxy-4, 6-bis(benzyloxy)acetophenone 3 and labeled 3, 4-bis(benzyloxy)-benzaldehyde 7 are described. Copyright

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