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2-Butenoic acid, 2-(acetylamino)-3-bromo-4-phenyl-, methyl ester, (E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

188656-21-5

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188656-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188656-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,6,5 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188656-21:
(8*1)+(7*8)+(6*8)+(5*6)+(4*5)+(3*6)+(2*2)+(1*1)=185
185 % 10 = 5
So 188656-21-5 is a valid CAS Registry Number.

188656-21-5Upstream product

188656-21-5Downstream Products

188656-21-5Relevant academic research and scientific papers

A convenient cross-coupling route to α,β,γ,δ-unsaturated amino acids

Burk, Mark J.,Allen, John G.,Kiesman, William F.,Stoffan, Karen M.

, p. 1309 - 1312 (1997)

β-Bromoenamide esters are coupled stereospecifically to vinylboronic acids via a palladium-catalyzed Suzuki reaction. This cross-coupling proceeds under mild conditions with Pd(OAc)2 in 95% EtOH at 50°C and produces amino acids with 1,3-diene side chains in high yields.

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