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An essential Amino acid for human development. Lysine was first identified in 1889 by Drechsel. Synthetic lysine is added as a nutrient to many food products.

Synonyms and Related Terms

LYS; 2,6-diaminohexanoic acid

Chemical structure


Other Properties

Soluble in water. Slightly soluble in ethanol. Insoluble in common organic solvents.

Composition NH2(CH2)4CH(NH2)COOH
CAS 39665-12-8
Melting Point 224 (dec)
Molecular Weight mol. wt. = 164.19

Hazards and Safety

Mallinckrodt Baker: MSDS


  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 5667
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997

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