Yoneyama Yakuhin Kogyo Co., Ltd has been engaged in the manufacturing of Amino acids and related materials since 1917 in Japan. We can supply wide range of Amino acids,D-Amino Acids etc.. We can reach you high-quality Amino acids which you require.

We widely deal in D-Amino acids corresponding to the unnatural L-amino acids as well as naturally-occurring ones.
In recent years, D-amino acid has been confirmed to be present in vivo or fermented foods.

Please refer to the D-amino acid products list

【D-Amino Acid Product List】

DL-Amino Acids

DL-amino acid is a mixture of equal amounts of L-amino acid and D-amino acid.

Please refer to the DL-amino acid products list

【DL-Amino Acid Product List】