https://www.draeger.com/th_th/Substances/1281
trans-2-Butene | C4H8 | 624-64-6
trans-2-Butene | C4H8
trans 2 butenec4h862464
https://www.draeger.com/id_id/Substances/67
1-Butene | C4H8 | 106-98-9
1 butenec4h810698
https://www.draeger.com/th_th/Substances/1344
2-Butene, mixed isomers | C4H8 | 107-01-7
2-Butene, mixed isomers | C4H8
2 butenemixedisomersc4h8107