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Fourier Transform Infrared ( FTIR ) spectroscopy and Nuclear Magnetic Resonance ( NMR ) spectroscopy confirmed the occurrence of a Michael addition reaction between the diacrylate group of the photoreactive monomer and the primary amine group of amlodipine .
 Fourier Transform Infrared, FTIR, spectroscopy, Nuclear Magnetic Resonance, NMR, spectroscopy, Michael addition reaction, diacrylate, photoreactive monomer, primary amine, amlodipine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 Fourier Transform Infrared, FTIR, spectroscopy, Nuclear Magnetic Resonance, NMR, spectroscopy, Michael addition reaction, diacrylate, photoreactive monomer, primary amine, amlodipine