Research ArticlesDetermination of Phenoxymethyl penicilloic acid (cas 11039-68-2) and Phenoxyethyl penicilloic acid (cas 11039-68-2) in Urine in the Presence of the Parent Penicillins

Add time:08/21/2019    Source:sciencedirect.com

Penicillin and the corresponding penicilloic acid (cas 11039-68-2) are extracted by chloroform from an acidified sample of urine which has been partly saturated by ammonium sulfate. A portion of the extract is dried and redissolved in a small volume of acetone. A measured aliquot is chromatographed on a silica gel thin-layer plate by acetone-acetic acid (19:1). The separated penicilloic acid is detected by starch-iodine spraying. The zones are transferred into glass tubes, nitrated, and neutralized by ammonia. The absorbance of the yellow supernatant, which is proportional to the concentration of penicilloic acid, is measured spectrophtometrically.

We also recommend Trading Suppliers and Manufacturers of penicilloic acid (cas 11039-68-2). Pls Click Website Link as below: cas 11039-68-2 suppliers

Prev:The interference of penicilloic acid (cas 11039-68-2)s with Karl Fischer titration of penicillins
Next:RESEARCH ARTICLESPreparation and Immunological Cross-Reactions of Penicilloic and Penilloic Acids)