1548942-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1548942-21-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,4,8,9,4 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1548942-21:
(9*1)+(8*5)+(7*4)+(6*8)+(5*9)+(4*4)+(3*2)+(2*2)+(1*1)=197
197 % 10 = 7
So 1548942-21-7 is a valid CAS Registry Number.