21998-73-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21998-73-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,9 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21998-73:
(7*2)+(6*1)+(5*9)+(4*9)+(3*8)+(2*7)+(1*3)=142
142 % 10 = 2
So 21998-73-2 is a valid CAS Registry Number.
InChI:InChI=1/C11H27NO5P2S2/c1-10(2)16-18(13,17-11(3)4)12(5)8-9-21-19(20,14-6)15-7/h10-11H,8-9H2,1-7H3