Product introduction:
Hydrindantin dihydrate can be used for amino acid analysis of proteins. Most amino acids, except proline, can react with hydrindantin dihydrate after hydrolysis. The side chains of certain amino acids can also be degraded during hydrolysis. Therefore, for amino acids that do not react with hydrindantin dihydrate or undergo other reactions, separate analysis is needed. The remaining amino acids can be quantitatively quantified by colorimetry after chromatographic separation. In thin-layer chromatography (TLC) for analyzing chemical reactions, it can be used to detect all amines, carbamate esters, and amide substances after sufficient heat treatment. When hydrindantin dihydrate reacts with amino acids, it can release CO2, and the carbon atoms in carbon dioxide come from the carboxyl carbon of amino acids.

In archaeological research, this reaction is used to release carboxyl carbon from ancient bones for stable isotope analysis, helping to reconstruct the food structure of ancient organisms. Soil treated with a labeled substrate, followed by the release of carboxylamine through the reaction of hydrindantin dihydrate with amino acids, can demonstrate whether this substrate has been absorbed into microbial proteins. This method successfully discovered that some ammonia oxidizing bacteria (also known as nitrifying bacteria) utilize urea in the soil as a carbon source. Forensic medicine often uses hydrindantin dihydrate solutions to analyze latent fingerprints on porous surfaces such as paper. The fine sweat secreted by the fingers accumulates on the surface of unique finger patterns, which are fingerprints containing amino acids. After treatment with hydrindantin dihydrate, the amino acid fingertip patterns can be turned into visible purple (for reference only).

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