1) Cat. No.: TRC-B686860; 2) Chemical Name: 4-Bromo-2-pyrrolecarboxaldehyde; 3) CAS No.: 931-33-9; 4) Mol. Formula: C5H4BrNO; 5) Mol. Weight: 174; 6) Packing Size: 1g / 10g; 7) Appearence: ; 8) Application Notes: Twenty-one halo- and cyanopyrroles related to the trail pheromone of A. texana, Methyl 4-Methylpyrrole-2-carboxylate [34402-78-3], were prepared and tested by a faster and more sensitive bioassay than was previously available. Methyl 4-Chloropyrrole-2-carboxylate [1194-96-3] and Methyl 4-bromopyrrole-2-carboxylate appeared to be as active as the first one. Responsiveness of the ants in descending order to these compounds based on the constituent in the number two position, was: esters, methyl ketones, aldehydes. ; 9) Synonym: 4-Bromo-1H-pyrrole-2-carboxaldehyde; 4-Bromopyrrole-2-carboxaldehyde; ; 10) Solubility: ; 11) Storage condition: ; 12) References: Sonnet, P.E., et al.: Environ, Ent.,2,851 (1973),