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Crotonoside is a guanosine analog originally isolated from C. tiglium that has diverse biological activities.1,2,3 It is cytotoxic to P338, L5178Y, Sp2/O, HL-60, and Raji cells in vitro (EC50s = 21, 370, 120, 70, and 400 μM, respectively).1 Crotonoside (48 mg/kg per day for 12 days) reduces tumor growth by 60% in S-180 sarcoma and Ehrlich carcinoma solid tumor mouse models. It has been used as an internal standard for the semi-quantitative analysis and comparison of RNA metabolites in MCF-7 breast cancer cells and MCF-10A mammary epithelial cells.4 Crotonoside decreases the force and rate of contraction in isolated guinea pig atria (EC50s = 2.8 and 17.8 μM, respectively) and reduces carotid blood pressure in anesthetized cats when administered intravenously at a dose of 0.5 μmol/kg.2,3
WARNING This product is not for human or veterinary use.
1. Isolation of isoguanosine from Croton tiglium and its antitumor activity. Arch. Pharm. Res. 17(2), 115-118 (1994).
2. Effects of some naturally-
3. Comparison of smooth muscle effects of crotonoside (isoguanosine) and adenosine. J. Pharmacol. Exp. Ther. 97(3), 379-383 (1949).
4. Metabolic signature of breast cancer cell line MCF-