666856-29-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666856-29-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,8,5 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 666856-29:
(8*6)+(7*6)+(6*6)+(5*8)+(4*5)+(3*6)+(2*2)+(1*9)=217
217 % 10 = 7
So 666856-29-7 is a valid CAS Registry Number.