1270977-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1270977-98-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,0,9,7 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1270977-98:
(9*1)+(8*2)+(7*7)+(6*0)+(5*9)+(4*7)+(3*7)+(2*9)+(1*8)=194
194 % 10 = 4
So 1270977-98-4 is a valid CAS Registry Number.