871834-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871834-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,8,3 and 4 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 871834-64:
(8*8)+(7*7)+(6*1)+(5*8)+(4*3)+(3*4)+(2*6)+(1*4)=199
199 % 10 = 9
So 871834-64-9 is a valid CAS Registry Number.