CAS 922-63-4 appears in our catalog under these names: 2–Ethylacrolein, 2-Ethylacrolein, tech. 90%, stab. with 50ppm hydroquinone , 2-Methylenebutanal 97% stabilized Hydroquinone, 2-ETHYLACROLEIN, CONTAINS HYDROQUINONE &. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Ambeed, Sigma-Aldrich. Available pack sizes: 100ml, 25ml, 5ml, 5g, 25g, 100g, 1g, 10g.