B2,PYRONIN Y,超纯级，美国amresco*，大量现货，*

B2,PYRONIN Y,超纯级，美国amresco*，大量现货，*

B2,L-CYSTEINE HYDROCHLORIDE,高纯级，美国amresco*，大量现货，*

B2,DEXTRAN SULFATE,超纯级，美国amresco*，大量现货，*

B2,DEXTRAN SULFATE,超纯级，美国amresco*，大量现货，*

B2,GUANOSINE,超纯级，美国amresco*，大量现货，*

B2,L-ASPARTIC ACID,高纯级，美国amresco*，大量现货，*

B2,AMMONIUM SULFATE,超纯级，美国amresco*，大量现货，*

B2,TRIS ACETATE,高纯级，美国amresco*，大量现货，*

B2,GLUCOSE,美国药典级,ACS级,欧洲药典级,日本药典级，美国amresco*，大量现货，*