557772-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 557772-39-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,7,7,7 and 2 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 557772-39:
(8*5)+(7*5)+(6*7)+(5*7)+(4*7)+(3*2)+(2*3)+(1*9)=201
201 % 10 = 1
So 557772-39-1 is a valid CAS Registry Number.