1. Luo SR, Mai L (1986) Analysis of alkaloids in Leonurus heterophyllus. Chin J Pharm Anal 6:47–48
2. Xu LQ, Dong YW (1985) Quantitative determination of total alkaloids in Herba leonuri by colorimetric method with ammonium chromium thiocyanate. Chin Trad Herb Drugs 16:487–488
3. Hui YM, Zhang CY, Sun DQ, Wu YP (1982) Qualitative and quantitative analysis of Yi Mu Cao (Leonurus heterophyllus) in different growth stages. Bull Chin Mat Med 7:8–9
4. Ho CS, Yu CF, Wang H (1962) Chemical studies on the Chinese drug, I-mu-tsao. I. Structure of alkaloid A. Sci Sin 11:1341–1352
5. Goto T, Kato N, Hirata Y (1962) The structure of leonurine. Tetrahedron Lett 545–548