127757-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127757-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,5 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 127757-89:
(8*1)+(7*2)+(6*7)+(5*7)+(4*5)+(3*7)+(2*8)+(1*9)=165
165 % 10 = 5
So 127757-89-5 is a valid CAS Registry Number.