87657-49-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87657-49-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,5 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87657-49:
(7*8)+(6*7)+(5*6)+(4*5)+(3*7)+(2*4)+(1*9)=186
186 % 10 = 6
So 87657-49-6 is a valid CAS Registry Number.