271258-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 271258-54-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,1,2,5 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 271258-54:
(8*2)+(7*7)+(6*1)+(5*2)+(4*5)+(3*8)+(2*5)+(1*4)=139
139 % 10 = 9
So 271258-54-9 is a valid CAS Registry Number.