Custom mix of C0-C4 fluorenes 0217.13 Fluorene 1090.14 9-Methylfluorene 0351.14 2-Methylfluorene 0350.14 1-Methylfluorene 1091.14 4-Methylfluorene 0352.15 9-Ethylfluorene 0908.15 1,7-Dimethylfluorene 1694.16 9-n-Propylfluorene 1696.17 9-n-Butylfluor