Summary
Summary
The assigned chirality at each center of the synthetic nonapeptide histrelin (L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-D-Nim-benzyl-histidyl-L-leucyl-L-arginyl-L-proline-ethylamide) was verified using chiral gas chromatography. The procedure involved acid hydrolysis of histrelin to the constituent amino acids, derivatization as the N-pentafluoropropionyl/isopropyl esters and the analysis of the mixture using a commercially available 25m chiral capillary column (Chirasil-L-Val). There was no significant difference in the retention time of the amino acids obtained from the hydrolysate mixture when compared to the appropriate standards. Additionally, the hydrolysate was spiked with the D and L amino acids to prove the identity of closely eluting peaks.
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Luteinizing hormone-releasing hormone
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Shaw, C.J., Cotter, M.L. Determination of the configuration of histrelin, and LHRH analog, by chiral capillary gas chromatography. Chromatographia 21, 197–200 (1986). https://doi.org/10.1007/BF02311886
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DOI: https://doi.org/10.1007/BF02311886