{'fraction_non_alphanumeric': 0.040625, 'fraction_numerical': 0.0140625, 'mean_word_length': 5.346534653465347, '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}}
Isolation and structure of a novel pyridine derivative from the Algerian newt, Pleurodeles waltlii.

Since its discovery more than 20 years ago the structure of a strongly fluorescent compound called "pleurodeles blue" has remained unknown. Isolation of this pigment has been carried out by successive column chromatographies including epichlorohydrin-triethanolamine-Sephadex and phospho-Sephadex. The structural elucidation of a novel pyridone N-glycoside, 1-beta-D-glucopyranosylpyrid-2(1H)-one-6-acetic acid, is based on a detailed study of its high-resolution mass spectra, 1H and 13C-NMR spectra and its hydrolysis to yield D-glucose.