1-羟基-2-丁酮,1-Hydroxy-2-butanone
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聚丙烯腈,Polyacrylonitrile;average Mw 150,000 (Typical) -
4-氯苯甲醛,4-Chlorobenzaldehyde;97% -
2-甲基苯乙烯,2-Methylstyrene;≥95.0% (GC) -
4'-甲基苯乙酮,4′-Methylacetophenone;≥95%, FCC, FG -
人参皂苷Rd,Ginsenoside Rd;analytical standard, ≥95.0% (HPLC) -
氯霉素,Chloramphenicol;Pharmaceutical Secondary Standard; Certified Reference Material
