Acrotein ChemBio Inc. is headquartered in AL, USA and has unique in stock over 21000 chemicals. We can supply products below from gram to kilogram scales: • Unnatural & natural amino acids • Building blocks: organic acid, amine • Heterocycles: phenylpyrrolidine analogues, azetidines, 1-phenylcyclopylamine building blocks • Bioactive Compounds & Natural Products • Click Chemistry Reagents • PEG Amino Acids & Azido-PEG & Bromide • Ligands and Cross Linkers for PROTACs