Organic Chemistry: Ketamine Molecule science composition notebook - 1/4 inch Hexagonal Graph Paper Notebook for psychonauts The perfect hexagonal graph paper composition notebook for organic chemistry students. This hexagonal graph paper notebook is ideal for chemistry notes, practice, and test prep. Printed on high-quality paper with legible yet non-intrusive lines, each 1/4" hexagon offers enough room for note-taking, drawing carbon chains, and...