1656288-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1656288-31-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,5,6,2,8 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1656288-31:
(9*1)+(8*6)+(7*5)+(6*6)+(5*2)+(4*8)+(3*8)+(2*3)+(1*1)=201
201 % 10 = 1
So 1656288-31-1 is a valid CAS Registry Number.