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-methoxyaninline the electron donating methoxy group donates electron density in to the ring. The amine in p-methoxyaniline is revealed to obtain more electron density, revealed being a yellow color, compared on the amine in aniline.The industrial system includes the response of methanol with anhydrous ammonia, in the presence of the drying catalys
Duy nhất Bảo Nhĩ Vương kết hợp được two vị dược liệu Sơn Thù và Cốt Toái Bổ đảm bảo nguyên lý "vừa tăng cường chức năng vừa khai khiếu" giúp đẩy lùi tiếng ù nhanh chóng.Với cơ chế hỗ trợ tăng cường chức năng nghe bằng việc bổ sung dưỡng chất cho cơ thể từ th