ON addition of a small amount of phenyl hydroxylamine (C 6 H 5.NHOH) to a fresh alkaline solution of hæmatin prepared from hæmin crystals, the colour of the solution turns rapidly from brown to ...

Each PPD derivative has a characteristic ultraviolet absorption spectrum ... High performance chromatography (HPLC-MS), the column used was XDB-phenyl, 4.6 × 150 nm, and 3.5 micron, from (Agilent ...

Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India ...

Biobased Organic Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, Geleen 6167RD, The Netherlands ...