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(E)-5-Benzyliden-4-hydroxy-2-oxo-3-pyrrolin-3-carbonsaeuremethylester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

87812-89-3

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87812-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87812-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,1 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87812-89:
(7*8)+(6*7)+(5*8)+(4*1)+(3*2)+(2*8)+(1*9)=173
173 % 10 = 3
So 87812-89-3 is a valid CAS Registry Number.

87812-89-3Relevant academic research and scientific papers

A Simple Procedure to Prepare the Labile Stereoisomers of 5-Benzylidenepyrrolin-2-ones

Stachel, Hans-Dietrich,Poschenrieder, Hermann,Wiesend, Bruno

, p. 988 - 991 (2007/10/02)

The known Z-isomers of some N-unsubstituted 5-benzylidenepyrrolin-2-ones (2, 10, 12) change the configuration upon heating with oxalylchloride.Methanolysis of the intermediate imides (6, 8, 9) yields the corresponding E-isomers. - Key words: 5-Benzylidenepyrrolin-2-ones, 5-Benzylidenetetramic Acids, cis-trans Isomerisation

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