23073-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23073-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,7 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 23073-05:
(7*2)+(6*3)+(5*0)+(4*7)+(3*3)+(2*0)+(1*5)=74
74 % 10 = 4
So 23073-05-4 is a valid CAS Registry Number.
InChI:InChI=1/C18H18O4/c1-21-15-10-8-13(9-11-15)16(18(20)22-2)12-17(19)14-6-4-3-5-7-14/h3-11,16H,12H2,1-2H3
23073-05-4Relevant articles and documents
One-Pot Quinine-Catalyzed Synthesis of α-Chiral γ-Keto Esters: Enantioenriched Precursors of cis-α,γ-Substituted-γ-Butyrolactones
Meninno, Sara,Volpe, Chiara,Lattanzi, Alessandra
supporting information, p. 2845 - 2848 (2016/09/13)
A highly enantioselective one-pot synthesis of important building blocks, α-chiral γ-keto esters, has been developed by combining a quinine-catalyzed Michael addition of malononitrile to trans-enones followed by magnesium monoperoxyphthalate (MMPP) oxidat