193977-24-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 193977-24-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,9,7 and 7 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 193977-24:
(8*1)+(7*9)+(6*3)+(5*9)+(4*7)+(3*7)+(2*2)+(1*4)=191
191 % 10 = 1
So 193977-24-1 is a valid CAS Registry Number.