Multiple choice The ------------------ organic compound acts as a bronchodilator. Allyl chloride Amido black 10B 4-Aminobenzoic acid Aminophylline Reveal answer Fill a bubble to check yourself D Correct answer Explanation Aminophylline is a bronchodilator. It is a compound of the bronchodilator theophylline with ethylenediamine in 2:1 ratio. The ethylenediamine improves solubility, and the aminophylline is usually found as a dihydrate.