6-(4,4,5,5-四甲基-1,3,2-二氧杂硼杂环戊烷-2-基)-3,4-二氢异喹啉-2(1H)-甲酸叔丁酯, tert-Butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3

6-溴-2-氟-3-吡啶醇, 6-Bromo-2-fluoropyridin-3-ol

5-氨基-2-吡啶羧酸乙酯, Ethyl 5-aminopicolinate

4-氟苯并噻唑-2-甲酸, 4-Fluorobenzo[d]thiazole-2-carboxylic acid

3-甲基-1,2,4-噻二唑-5-羧酸乙酯, Ethyl 3-methyl-1,2,4-thiadiazole-5-carboxylate

2-溴-5-甲基-4,5,6,7-四氢噻唑并[5,4-c]吡啶, 2-Bromo-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine

2-(4-(2-(1-异丙基-3-甲基-1H-1,2,4-三唑-5-基)-5,6-二氢苯并[f]咪唑并[1,2-d] [1,4]氧氮杂-9-基)-1H-吡唑-1-基)-2-甲基丙酸酯, Ethyl 2-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5

厄洛替尼杂质B, Erlotinib impurity B

3-醛基苯乙酸, 2-(3-Formylphenyl)acetic acid

(R)-2-((S)-4-氨基-5-叔丁氧基-5-氧代戊酰胺基)戊二酸二叔丁酯, (R)-di-tert-butyl 2-((S)-4-amino-5-tert-butoxy-5-oxopentanam