155806-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155806-31-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,0 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 155806-31:
(8*1)+(7*5)+(6*5)+(5*8)+(4*0)+(3*6)+(2*3)+(1*1)=138
138 % 10 = 8
So 155806-31-8 is a valid CAS Registry Number.