1.CAS NO:1359655-48-3 ethyl 5-(3-methoxyphenyl)-1H-pyrazole-4-carboxylate
2.CAS NO:1264088-78-9 ethyl (2Z)-2-chloro-2-[2-(2-ethylphenyl)hydrazin-1-ylidene]acetate
3.CAS NO:192573-37-8 (1S,3aR,4S,7aS)-1-((S)-1-(3-hydroxy-3-methylbutoxy)ethyl)-7a-methyloctahydro-1H-inden-4-ol
4.CAS NO:236750-62-2 Erlotinib Impurity 20
5.CAS NO:912762-53-9 tert-Butyl N-[(2z)-2-(hydroxyimino)-2-(3-methoxyphenyl)ethyl]carbamate
