Safer dye for dry-column chromatography

Column Liquid Chromatography

Triazine-dye affinity; chromatography.

functional resemblance of column groups to carbamoyl phosphate. The enzyme binds its two substrates, carbamoyl phosphate and L-aspartate, in an obligatory order, with carbamoyl phosphate leading (Grayson et al., 1979). If column groups are sufficiently similar to carbamoyl phosphate, the enzyme should be adsorbed more tightly in the presence of L-aspartate, owing to the ‘locking-on’ effect (O’C...

Column Chromatography for Terpenoids and Flavonoids

Natural products have coming from various source materials including terrestrial plants, terrestrial microorganisms, marine organisms, terrestrial vertebrates and invertebrates have importance as they provide an amazing source of new drugs as well as new drug leads and new chemical entities for further drug development (McCurdy & Scully, 2005; Chin et al., 2006). Morphine, vincristine, codeine,...

Mercurated dextran column chromatography for fractionating mononucleotides.

Mercurated dextran (polysaccharide) was found to fractionate mononucleotides according to their affinity for organomercurial Hg(+). The nucleotides are released from the chromatographic column in the sequence CMP, AMP, GMP, and TMP when borate buffer of increasing pH is used as an eluent.

Phosphorus assay in column chromatography.

Malerials-30 per cent hydrogen peroxide (Baker and Adamson, phosphorus-free) and the ammonium molybdate, (NHJ6lMo7024.4Hz0, wereused. The Fiske and SubbaRow (I) reagent was prepared by adding 0.5 gm. of purified (1) 1-amino-2naphthol-4-sulfonic acid (Eastman Organic Chemicals) with mechanical stirring to 200 ml. of freshly prepared 15 per cent sodium bisulfite (anhydrous), followed by 1.0 gm. o...