L-Histidine

L-Histidine is an essential amino acid for human development which the body cannot produce on its own. L-Histidine is one of the 22 proteinogenic amino acids. L-Histidine precursor to histamine and a component of carnosine. Synonyms: L-His-OH, (2S)-2-Amino-3-(1H-imidazol-4-yl)propanoic Acid, (S)-Histidine, L-(-)-Histidine, (S)-4-(2-Amino-2-carboxyethyl)imidazole, (S)-alpha-Amino-1H-imidazole-4-propanoic Acid, 1448: PN: EP2071334 SEQID: 1532 claimed protein, NSC 137773, 1448: PN: WO2009077864 SEQID: (S)-1H-Imidazole-4-alanine, PN: WO2009046220 SEQID: 343 claimed sequence, Glyoxaline-5-alanine, Histidine,3-(1H-Imidazol-4-yl)-L-alanine, CAS No: 71-00-1, Molecular Formula: C6H9N3O2, Molecular Weight: 155.16, Appearance: White, crystalline powder, Purity: >99%, Identification: Conform to USP, Specific Rotation: +12.6° to +14.0°, Loss on Drying: <0.2%, Residue on Ignition: <0.4%, Iron: <0.003%, Chloride: <0.05%, Heavy Metals: <0.001%, Arsenic: <0.0001%, Lead: <0.0001%, Sulfate: <0.03%, pH: 7.0-8.5, Endotoxin: <0.5EU/mg, Meets or exceeds USP Specifications , Important Note: , This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards:  All products should be handled by qualified personnel only, trained in laboratory procedures.