199657-47-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199657-47-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,6,5 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 199657-47:
(8*1)+(7*9)+(6*9)+(5*6)+(4*5)+(3*7)+(2*4)+(1*7)=211
211 % 10 = 1
So 199657-47-1 is a valid CAS Registry Number.