919092-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 919092-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,9,0,9 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 919092-57:
(8*9)+(7*1)+(6*9)+(5*0)+(4*9)+(3*2)+(2*5)+(1*7)=192
192 % 10 = 2
So 919092-57-2 is a valid CAS Registry Number.
919092-57-2Relevant academic research and scientific papers
Modular synthesis of tetrahydrofluorenones from 5-alkylidene Meldrum's acids
Fillion, Eric,Dumas, Aaron M.,Hogg, Sylvia A.
, p. 9899 - 9902 (2007/10/03)
The one-pot synthesis of tetrahydrofluorenones, the core 6-5-6 tricyclic structural motif found in norditerpenoid natural products, from alkylidene Meldrum's acids via thermal Diels-Alder/BF3·OEt 2-catalyzed Friedel-Crafts acylation
