{'fraction_non_alphanumeric': 0.013182674199623353, 'fraction_numerical': 0.003766478342749529, 'mean_word_length': 5.734177215189874, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Analysis of steroids. XVII. A differential spectrophotometric variant of the diethyl oxalate method for the determination of ketosteroid contaminants.

A method that consists of spectrophotometry following a Claisen condensation with diethyl oxalate was used for the determination of ketosteroid contaminants. Absorption of the main steroid component was eliminated by a differential spectrophotometric procedure. The proposed method is useful for the determination of ketosteroid contaminants present at the level of 0·1 per cent.