1 SIGMA 161683-5G 4-Cyclopentene-1,3-dione 95% 5G 1 2 SIGMA E51309-25G 1-Penten-3-one contains 0.1% BHT as stabilizer, 97% 25G 1 3 SIGMA 145017-5G 3-Penten-2-one 70% 5G 1 4 SIGMA 145777-5G 3-Methyl-2-cyclopentenone 97% 5G 1 5 SIGMA 466433-5G 1-Acetyl-1-cyclopentene 97% 5G 1 6 SIGMA 187607-25G 5-Methyl-3-hexen-2-one technical grade, 75% 25G 1 7 SIGMA CDS000006-5MG 3-Hexyn-2-one 5MG 1 8 SIGMA 273643-5G 2-Octynal 97% 5G 1 9 SIGMA 344214-25G 2-Bromo-3′-nitroacetophenone 97% 25G 1 10 SIGMA 245615-50G 2-Bromo-4′-nitroacetophenone 95% 50G 1 11 SIGMA 553662-5G 4′-Bromo-3′-nitroacetophenone 97% 5G 1 12 SIGMA N9209-10G 2′-Nitroacetophenone 95% 10G 1 13 SIGMA N9608-100G 4′-Nitroacetophenone 98% 100G 1 14 SIGMA 308080-5G Benzoylnitromethane 98% 5G 1 15 SIGMA 269255-5G trans-2-Pentenal 95% 5G 1 16 SIGMA 132659-25G trans-2-Hexen-1-al 98% 25G 1 17 SIGMA N10802-25G 2-Nitrobenzaldehyde 98% 25G 1 18 SIGMA C58703-25G 4-Chloro-3-nitrobenzaldehyde 98% 25G 1 19 SIGMA 107395-100ML Phenylacetaldehyde ≥90% 100ML 1 20 SIGMA 281670-5G 4-Nitrocinnamaldehyde, predominantly trans 98% 5G 1 21 SIGMA S4972-100ML Styrene ReagentPlus, contains 4-tert-butylcatechol as stabilizer, ≥99% 100ML 1 22 SIGMA 117706-100ML Phenylacetylene 98% 100ML 1 23 SIGMA 206490-5G 4-Ethynylanisole 97% 5G 1 24 SIGMA N26806-5G trans-β-Nitrostyrene 99% 5G 1 25 SIGMA N26601-2.5G 3-Nitrostyrene 96% 2.5G 1 26 SIGMA 519294-1G 1-Ethynyl-4-nitrobenzene 97% 1G 1