155816-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155816-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,1 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 155816-23:
(8*1)+(7*5)+(6*5)+(5*8)+(4*1)+(3*6)+(2*2)+(1*3)=142
142 % 10 = 2
So 155816-23-2 is a valid CAS Registry Number.