Patent ID: 9739732
Date: 2017-08-22
CPC Classifications: C07B,C07C,C07D,C07K,G01N,G01R

Claim:
1. A stable isotope-labeled amino acid for constituting a protein, satisfying all of the following conditions (1) to (3): (1) two or more carbon atoms are labeled with (2) the two or more carbon atoms labeled with (3) carbon atoms adjacent to all the wherein the amino acid is glutamic acid (Glu), isoleucine (Ile), lysine (Lys), leucine (Leu), methionine (Met), proline (Pro), glutamine (Gln), arginine (Arg), threonine (Thr), or valine (Val); and when the amino acid is leucine (Leu), a carbon atom of the methylene group present at the side chain of the amino acid is labeled with