Protopine, >98%, 20mg Back Catalog number: CFN99399 Availability: In the manufacturer's stock Price on request - + Recommended 91897 Pyridine Price on request MCBP-2367 2,3,6,7-Tetrachloro[13C12]biphenylene, 1.2ml x 50ug/ml, nonane Price on request ICV-4-100 Initial Check Verif. Standard 4, in 4%HNO3, 100ml Price on request