2728-90-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2728-90-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,2 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2728-90:
(6*2)+(5*7)+(4*2)+(3*8)+(2*9)+(1*0)=97
97 % 10 = 7
So 2728-90-7 is a valid CAS Registry Number.
InChI:InChI=1/C12H18F2O7/c1-4-19-9(15)7(13)12(18,11(17)21-6-3)8(14)10(16)20-5-2/h7-8,18H,4-6H2,1-3H3
2728-90-7Relevant articles and documents
Improved synthesis of d,l-fluorocitric acid
Vardanyan, Ruben,Kumirov, Vlad K.,Hruby, Victor J.
experimental part, p. 920 - 924 (2011/11/12)
We propose a decagram synthesis of commercially unavailable fluorocitric acid. The synthesis begins with benzyl fluoroacetate, which is converted to dibenzyl 2-fluoro-3-oxosuccinate, followed by condensation with malonic acid or its monobenzyl ester and subsequent hydrogenolysis.
