Sigma-Aldrich
甲酰胺, ReagentPlus®, ≥99.0% (GC)
Sigma-Aldrich
甲酰胺, ≥99.5% (GC), BioReagent, Molecular Biology
Sigma-Aldrich
甲酰胺, BioUltra, Molecular Biology, ≥99.5% (T)
Sigma-Aldrich
腺嘌呤, BioReagent, suitable for cell culture
Sigma-Aldrich
核糖核酸 来源于圆酵母, Type VI
Sigma-Aldrich
核糖核酸 来源于面包酵母（酿酒酵母）
Sigma-Aldrich
甲酰胺, ACS reagent, ≥99.5%
Sigma-Aldrich
尿嘧啶, BioReagent, suitable for cell culture
Sigma-Aldrich
甲酰胺, spectrophotometric grade, ≥99%
Supelco
鸟嘌呤, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
鸟嘌呤, BioUltra
Supelco
胞嘧啶, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
腺嘌呤, BioReagent, suitable for plant cell culture, ≥99%
Sigma-Aldrich
核糖核酸 二乙基乙醇氨盐, Type IX
Supelco
腺嘌呤, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
核糖核酸 来源于圆酵母, core, Type II-C
核糖核酸, European Pharmacopoeia (EP) Reference Standard
腺嘌呤, European Pharmacopoeia (EP) Reference Standard
Sigma-Aldrich
甲酰胺, Vetec™, reagent grade, 98%
吉西他滨杂质A, European Pharmacopoeia (EP) Reference Standard
氟尿嘧啶杂质C, European Pharmacopoeia (EP) Reference Standard
Sigma-Aldrich
腺嘌呤, Vetec™, reagent grade, ≥99%
Sigma-Aldrich
尿嘧啶, Vetec™, reagent grade, 98%
Sigma-Aldrich
胞嘧啶, Vetec™, reagent grade, 99%
