氨基酸及其衍生物：

1. Basic amino acids;
2. Compound amino acid salts:  
  L-Arginine L-aspartate, L-Arginine L-glutamate, L-Arginine L-pyroglutamate,
  L-Lysine L-aspartate, L-Lysine L-glutameat, L-Lysine L-Carbocysteine,
  L-Ornithine L-aspartate, etc.
3. Acetyl amino acids:
  N-acetyl-L-cysteine, N-acetyl-L-hydroxyproline, N-acetyl-L-leucine,
  N-acetyl-L-tyrosine, N-acetyl-L-methionine, etc.
4. Amino acid esters:
  L-cysteine (m)ethylester hcl, L-leucine (m)ethylester hcl,
  L-tyrosine(m)ethylester hcl, etc. 

二手氨基酸分析仪