1638760-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638760-28-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,7,6 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1638760-28:
(9*1)+(8*6)+(7*3)+(6*8)+(5*7)+(4*6)+(3*0)+(2*2)+(1*8)=197
197 % 10 = 7
So 1638760-28-7 is a valid CAS Registry Number.