.beta.-(o-Methoxyphenyl)acrolein 1504-74-1 2-Methoxycinnamaldehyde 2-Propenal, 3-(2-methoxyphenyl)- Cinnamaldehyde, o-methoxy- NSC114599 o-Methoxy cinnamaldehyde o-Methoxycinnamaldehyde o-Methoxycinnamic aldehyde o-Methoxycinnamicaldehyde crystals