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Channel your inner August Kekulé and show your love for o-chem! This 200-piece molecular model set will allow you to easily build models of aromatic and aliphatic hydrocarbons, alcohols, aldehydes, ketones, carboxylic acids, esters, ethers, amines, amides, halogen compounds, sugars, fats, amino acids, alkaloids, and other families of organic compounds. It can bring to life such concepts as stereoisomerism and conformational analysis, and help you relate the physical and chemical properties of compounds to their molecular structures. This set contains an ample number of carbon, hydrogen and oxygen atoms compared to other kits out there. C black 16 H white 30 O red 15 N (3 holes) blue 2 N (4 holes) blue 2 S yellow 2 P (4 holes) brown 1 P (5 holes) brown 1 F orange 2 Cl green 8 Br dark blue 2 I purple 2 Single bond (space filling) white 42 Single bond (open model) sky blue 52 Double and triple bond grey 22 Link remover cream 1