Database of Building-Blocks from TOSLab is available here.

TOSLab Company offers Building-Blocks and Advanced Reagents. Most of our Building-Blocks are heterocyclic compounds, bearing aldehyde, thione, amino and other highly reactive functions.

We also offer new unique lists of Natural Building-Blocks such as anabasine, lupinine, cytizine and their semisynthetic derivatives, as well as Tryptamines, Homotryptamines and Carbolines.


The target amount of Building-Blocks and Advanced Reagents is 1 through 10 g.

Delivery of higher quantities is a matter of negotiations.