156901-55-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156901-55-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,9,0 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 156901-55:
(8*1)+(7*5)+(6*6)+(5*9)+(4*0)+(3*1)+(2*5)+(1*5)=142
142 % 10 = 2
So 156901-55-2 is a valid CAS Registry Number.