1638702-85-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638702-85-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,7,0 and 2 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1638702-85:
(9*1)+(8*6)+(7*3)+(6*8)+(5*7)+(4*0)+(3*2)+(2*8)+(1*5)=188
188 % 10 = 8
So 1638702-85-8 is a valid CAS Registry Number.