Hannedouche S, Souchard JP, Jacquemond-Collet I, Moulis C. Molluscicidal and radical scavenging activity of quinones from the root bark of Caryopteris x clandonensis. Fitoterapia. 2002 Oct;73(6):520–2. doi: 10.1016/s0367-326x(02)00163-6. PMID: 12385879.