311788-04-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311788-04-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,7,8 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 311788-04:
(8*3)+(7*1)+(6*1)+(5*7)+(4*8)+(3*8)+(2*0)+(1*4)=132
132 % 10 = 2
So 311788-04-2 is a valid CAS Registry Number.