19689-47-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19689-47-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,8 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19689-47:
(7*1)+(6*9)+(5*6)+(4*8)+(3*9)+(2*4)+(1*7)=165
165 % 10 = 5
So 19689-47-5 is a valid CAS Registry Number.