156604-22-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156604-22-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,0 and 4 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 156604-22:
(8*1)+(7*5)+(6*6)+(5*6)+(4*0)+(3*4)+(2*2)+(1*2)=127
127 % 10 = 7
So 156604-22-7 is a valid CAS Registry Number.