The Building Blocks (BB) collection currently contains
over 13 000 natural and synthetic in-stock-available building blocks.
The classification of the Building Blocks is indicated in the following fields.
PA Primary Amines
SA Secondary Amines
AK Aldehydes & Ketones
CA Carboxylic Acids
AN Anhydrides & Haloanhydrides
AA Aminoacids & their derivatives
PE Peptides & their derivatives
CH Carbohydrates & their derivatives
NU Nucleotides & Nucleosides
ST Steroids & Terpenoids
HAE Haloid Alkyles & Epoxydes
OCC Other Chemical Classes or Polyfunctional reagents
HY Hydrazines & Hydrazones