331842-87-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331842-87-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,8,4 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 331842-87:
(8*3)+(7*3)+(6*1)+(5*8)+(4*4)+(3*2)+(2*8)+(1*7)=136
136 % 10 = 6
So 331842-87-6 is a valid CAS Registry Number.