1338057-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1338057-20-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,0,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1338057-20:
(9*1)+(8*3)+(7*3)+(6*8)+(5*0)+(4*5)+(3*7)+(2*2)+(1*0)=147
147 % 10 = 7
So 1338057-20-7 is a valid CAS Registry Number.