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5-Methyl-5-(4-nitro-phenyl)-7-oxo-2,3-diphenyl-bicyclo[2.2.1]hept-2-ene-1,4-dicarboxylic acid dimethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128333-08-4

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128333-08-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128333-08-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,3 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128333-08:
(8*1)+(7*2)+(6*8)+(5*3)+(4*3)+(3*3)+(2*0)+(1*8)=114
114 % 10 = 4
So 128333-08-4 is a valid CAS Registry Number.

128333-08-4Downstream Products

128333-08-4Relevant academic research and scientific papers

ELECTROPHILIC EFFECTS IN THE DIENE SYNTHESIS REACTIONS OF α-SUBSTITUTED STYRENES WITH 2,5-DI(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE

Samuilov, Ya. D.,Bukharov, S. V.,Khiavi, Yu.,Konovalov, A. I.

, p. 208 - 211 (2007/10/02)

The reactivity of 2,5-di(methoxycarbonyl)-3,4-diphenylcyclopentadienone in diene synthesis with α-methyl- and α-methoxyarylethylenes was investigated.The relative reactivity of the styrenes within the individual series is determined by the change in their electron-donating characteristics.The differences in reactivity from one to the other in the series of styrenes depend to a large degree on the localization energy of the dienophiles.

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