54131-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54131-97-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,3 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 54131-97:
(7*5)+(6*4)+(5*1)+(4*3)+(3*1)+(2*9)+(1*7)=104
104 % 10 = 4
So 54131-97-4 is a valid CAS Registry Number.
InChI:InChI=1/C6H6O2S2/c1-9-5-3(7)4(8)6(5)10-2/h1-2H3
54131-97-4Relevant articles and documents
Reactions of Perfluorocycloalkenones with Nucleophiles
Card, Peter J.,Smart, Bruce E.
, p. 4429 - 4432 (2007/10/02)
The reactions of perfluorocyclopent-2-en-1-one and perfluorocyclobutenone with various nucleophiles have been studied. The enones are attacked by nucleophiles at C-3 via an addition-elimination sequence to afford the 3-substituted perfluorinated enones. M