现货供应左乙拉西坦杂质标准品(提供COA结构纯度确认图谱)
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Levetiracetam impurity 20 左乙拉西坦杂质20 N/A (S)-ethyl 4-((1-isopropoxy-1-oxobutan-2-yl)amino)butanoate
Levetiracetam impurity 19 左乙拉西坦杂质19 103833-72-3 现货供应
Levetiracetam impurity Q 左乙拉西坦杂质Q N/A isopropyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate
Levetiracetam impurity N 左乙拉西坦杂质N 3153-36-4 左乙拉西坦杂质标准品
Levetiracetam impurity L 左乙拉西坦杂质L 627-00-9
Levetiracetam impurity K 左乙拉西坦杂质K 103765-03-3
Levetiracetam impurity J 左乙拉西坦杂质J 15399-22-1
Levetiracetam impurity I 左乙拉西坦杂质I 1492-24-6
Levetiracetam impurity H 左乙拉西坦杂质H 7682-20-4
Levetiracetam impurity G 左乙拉西坦杂质G 358629-53-5
Levetiracetam impurity F 左乙拉西坦杂质F 358629-51-3
Levetiracetam impurity E 左乙拉西坦杂质E 102767-31-7
Levetiracetam impurity D 左乙拉西坦杂质D 103765-01-1
Levetiracetam impurity C 左乙拉西坦杂质C 142-08-5
Levetiracetam impurity B 左乙拉西坦杂质B 358629-47-7
Levetiracetam impurity A 左乙拉西坦杂质A 102849-49-0