66742-86-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66742-86-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,7,4 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66742-86:
(7*6)+(6*6)+(5*7)+(4*4)+(3*2)+(2*8)+(1*6)=157
157 % 10 = 7
So 66742-86-7 is a valid CAS Registry Number.