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.

CAS：931-33-9
中文别名：
英文别名：4-bromo-2-pyrrolecarboxaldehyde;4-Bromopyrrole-2-carboxaldehyde;4-bromo-pyrrole-2-carbaldehyde;4-bromo-1H-pyrrole-2-carboxaldehyde;4-bromo-2-formylpyrrole;1H-Pyrrole-2-carboxaldehyde,4-bromo;
分子式：C5H4BrNO
分子量：173.995
精确质量：172.948
Psa：32.86
Logp：1.5897

密度：1.8±0.1g/cm3
沸点：282.1±20.0°Cat760mmHg
闪点：124.4±21.8°C
蒸汽压：0.0±0.6mmHgat25°C
折射率：1.656

海关编码：2933990090
危险品标志：Xi