197887-27-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197887-27-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,8,8 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 197887-27:
(8*1)+(7*9)+(6*7)+(5*8)+(4*8)+(3*7)+(2*2)+(1*7)=217
217 % 10 = 7
So 197887-27-7 is a valid CAS Registry Number.