343789-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 343789-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,7,8 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 343789-87:
(8*3)+(7*4)+(6*3)+(5*7)+(4*8)+(3*9)+(2*8)+(1*7)=187
187 % 10 = 7
So 343789-87-7 is a valid CAS Registry Number.