311787-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311787-98-1 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 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 311787-98:
(8*3)+(7*1)+(6*1)+(5*7)+(4*8)+(3*7)+(2*9)+(1*8)=151
151 % 10 = 1
So 311787-98-1 is a valid CAS Registry Number.