We ran a column and obtained two pools plus a mixed pool. Most of the color remained near the top, suggesting that the orange color is an impurity. One of the pools is probably our product, but there is not enough in my judgement to carry through the next two steps of the synthesis (about 70 mg). These pools are still useful as TLC standards, and if we had possessed a standard before, we might not have been fooled into thinking that the reaction was incomplete when it almost certainly was complete. In addition we have now been reminded of the existence of an impurity that has a slightly higher Rf than the product. We are waiting for another shipment of starting material, which may be here as early as today.