19974-59-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19974-59-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,7 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19974-59:
(7*1)+(6*9)+(5*9)+(4*7)+(3*4)+(2*5)+(1*9)=165
165 % 10 = 5
So 19974-59-5 is a valid CAS Registry Number.