199387-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199387-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,3,8 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 199387-54:
(8*1)+(7*9)+(6*9)+(5*3)+(4*8)+(3*7)+(2*5)+(1*4)=207
207 % 10 = 7
So 199387-54-7 is a valid CAS Registry Number.