693784-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 693784-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,3,7,8 and 4 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 693784-98:
(8*6)+(7*9)+(6*3)+(5*7)+(4*8)+(3*4)+(2*9)+(1*8)=234
234 % 10 = 4
So 693784-98-4 is a valid CAS Registry Number.