939771-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 939771-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,9,7,7 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 939771-54:
(8*9)+(7*3)+(6*9)+(5*7)+(4*7)+(3*1)+(2*5)+(1*4)=227
227 % 10 = 7
So 939771-54-7 is a valid CAS Registry Number.