Supplier Page from Aladdin Scientific Corporation for (3R,4R)-4-Acetoxy-3-[(R)-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone
3'-Fluoro-4'-hydroxyacetophenone from Aladdin Scientific Corporation
4-Ethyl-1,3-dimethyl-1H-pyrazol-5-amine sesquihydrate from Aladdin Scientific Corporation
L-Methionine sulfoxide from Aladdin Scientific Corporation
Methylthiomethyl Acetate from Aladdin Scientific Corporation