551899-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 551899-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,1,8,9 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 551899-57:
(8*5)+(7*5)+(6*1)+(5*8)+(4*9)+(3*9)+(2*5)+(1*7)=201
201 % 10 = 1
So 551899-57-1 is a valid CAS Registry Number.