In comparison to PCA, 4-CAB is approximately 2- and 5-fold less potent at inhibiting the reuptake of serotonin (IC50 = 330 nM) and dopamine (IC50 = 2,343 nM), respectively, and is about 3-fold less potent in substituting for MDMA in animals in drug discrimination assays.[1] Though its dopaminergic activity is significantly attenuated compared to PCA, unlike the case of MBDB, it is not abolished, and is actually similar to that of MDMA.[1]
Relative to PCA, 4-CAB is also substantially less effective as a serotonergicneurotoxin.[1] A single 10 mg/kg administration of PCA to rats produces an approximate 80% decrease in serotonin markers as observed 1 week later.[1] In contrast, 11 mg/kg and 22 mg/kg doses of 4-CAB result in only 20% and 50% decreases, respectively.[1] This is once again similar to MDMA which causes a 40-60% reduction with a single 20 mg/kg dose.[2]
^ abcdefgJohnson MP, Huang XM, Oberlender R, Nash JF, Nichols DE (November 1990). "Behavioral, biochemical and neurotoxicological actions of the alpha-ethyl homologue of p-chloroamphetamine". European Journal of Pharmacology191 (1): 1–10. doi:10.1016/0014-2999(90)94090-K. PMID1982656.