87307-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87307-34-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,0 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87307-34:
(7*8)+(6*7)+(5*3)+(4*0)+(3*7)+(2*3)+(1*4)=144
144 % 10 = 4
So 87307-34-4 is a valid CAS Registry Number.