البحث
إكتشاف أشخاص جدد وإنشاء اتصالات جديدة وصداقات جديدة
any group or radical of the form RCO- where R is an organic group
any group or radical of the form RCO- where R is an organic group
any group or radical of the form RCO- where R is an organic group
the organic group of acetic acid (CH3CO-)
the organic group of acetic acid (CH3CO-)