1381785-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1381785-49-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,1,7,8 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1381785-49:
(9*1)+(8*3)+(7*8)+(6*1)+(5*7)+(4*8)+(3*5)+(2*4)+(1*9)=194
194 % 10 = 4
So 1381785-49-4 is a valid CAS Registry Number.