Xuất xứ | Mỹ |
Hãng sản xuất | Sigma |
Tryptophan Pharmaceutical Secondary Standard; Certified Reference Material, CAS No. 73-22-3 , Sigma-Aldrich ,1g
Tryptophan Pharmaceutical Secondary Standard; Certified Reference Material, CAS No. 73-22-3 , Sigma-Aldrich ,1g
Tryptophan Pharmaceutical Secondary Standard; Certified Reference Material, CAS No. 73-22-3 , Sigma-Aldrich ,1g
Tryptophan Pharmaceutical Secondary Standard; Certified Reference Material, CAS No. 73-22-3 , Sigma-Aldrich ,1g