843643-59-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 843643-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,3,6,4 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 843643-59:
(8*8)+(7*4)+(6*3)+(5*6)+(4*4)+(3*3)+(2*5)+(1*9)=184
184 % 10 = 4
So 843643-59-4 is a valid CAS Registry Number.