2-Diazo-his-trh 2-Diazohistidinyl-trh 5-Oxo-L-prolyl-2-diazonio-L-histidyl-L-prolinamide 81222-52-8 L-Prolinamide, 5-oxo-L-prolyl-2-diazonio-L-histidyl- Pglu-2-diazo-his-pro-NH2 Thyrotropin-releasing hormone, 2-diazohistidinyl- Trh, 2-diazohistidinyl