155689-63-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155689-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,6,8 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 155689-63:
(8*1)+(7*5)+(6*5)+(5*6)+(4*8)+(3*9)+(2*6)+(1*3)=177
177 % 10 = 7
So 155689-63-7 is a valid CAS Registry Number.