199855-49-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199855-49-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,8,5 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 199855-49:
(8*1)+(7*9)+(6*9)+(5*8)+(4*5)+(3*5)+(2*4)+(1*9)=217
217 % 10 = 7
So 199855-49-7 is a valid CAS Registry Number.