7-Ethyl trytophol
Zhejiang Dongdong Pharmaceutical Co., Ltd (Yanchenh Yuekai Pharmchem Co., Ltd)
Trityl chloride
Zhejiang Dongdong Pharmaceutical Co., Ltd (Yanchenh Yuekai Pharmchem Co., Ltd)
Famotidine
Zhejiang Dongdong Pharmaceutical Co., Ltd (Yanchenh Yuekai Pharmchem Co., Ltd)
Benzoylacetonitrile
Zhejiang Dongdong Pharmaceutical Co., Ltd (Yanchenh Yuekai Pharmchem Co., Ltd)