128871-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128871-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,7 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128871-56:
(8*1)+(7*2)+(6*8)+(5*8)+(4*7)+(3*1)+(2*5)+(1*6)=157
157 % 10 = 7
So 128871-56-7 is a valid CAS Registry Number.