(2-Furyl)acrylic acid .beta.-(2-Furyl)acrylic acid 2-Furalacetic acid 2-Furanacrylic acid 2-Propenoic acid, 3-(2-furanyl)- 3-(2-Furyl)acrylic acid 539-47-9 Acrylic acid, .beta.-2-furyl- Furacrylic acid Furanacrylic acid Furfurylideneacetic acid Furylacrylic acid NSC32626