1217481-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1217481-34-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,7,4,8 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1217481-34:
(9*1)+(8*2)+(7*1)+(6*7)+(5*4)+(4*8)+(3*1)+(2*3)+(1*4)=139
139 % 10 = 9
So 1217481-34-9 is a valid CAS Registry Number.