抗生素、生物堿;抗生素;Active Pharmaceutical Ingredients;Antibiotics for Research and Experimental Use;Biochemistry;Others (Antibiotics for Research and Experimental Use);Antibiotic Explorer;Amines;Aromatics;Intermediates & Fine Chemicals;Pharmaceuticals;API;Chiral Reagents;Pharmaceutical intermediate;鹵代物;醫藥原料;分析標準品