a synthetic crystalline compound which forms deeply coloured products with primary amines and is used in analytical tests for amino acids

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Connections NYT: Hints For Today's Puzzle, Tue, Jan 13

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Today’s Wordle Answer Jan 13 #1669- NYT Wordle Hints & Updates

Today's NYT Pips Hints & Answers

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NYT Mini Crossword Answers Today - The Mini for Jan 13 Solved