172688-44-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172688-44-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,6,8 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 172688-44:
(8*1)+(7*7)+(6*2)+(5*6)+(4*8)+(3*8)+(2*4)+(1*4)=167
167 % 10 = 7
So 172688-44-7 is a valid CAS Registry Number.