172738-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172738-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,7,3 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 172738-67:
(8*1)+(7*7)+(6*2)+(5*7)+(4*3)+(3*8)+(2*6)+(1*7)=159
159 % 10 = 9
So 172738-67-9 is a valid CAS Registry Number.