The successful use of paper chromatography for t.he separation of corticoids (2) suggested the general usefulness of this procedure for relat,ed compounds. Two procedures for t.he separation of cardiac glycosides and aglycones have been described (3, 1). Preliminary reports (5, G) and a reference (7) have been made on methods for other steroid hormones. This paper describes an effective system ...

Paper chromatography is very helpful in the identification and comparison of antibiotics, but very few results from the application of this technique have been published so far. The awakening of interest in the search for antibiotics which are active against fungi pathogenic to plants and animals makes the investigator aware of the scant information that is available to help characterize such a...

Most of the techniques that have been described for large-scale, preparative paper c hromatograp hy depe nd on an i.ncrease in bulk through the use of many closely pressed layers of a thin paper [IJ.' So me of these methods require the tedious loading of each s hee t , and others tend to suffer from a lack of uniformity in the movement of compounds thro ughout the bulk. Th e latter disadvantage...