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Date: 18-11-2019
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Date: 14-7-2019
1984
Date: 29-5-2017
5988
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Aldehydes (R-CHO) take the suffix “-al“. If other functional groups are present, the chain is numbered such that the aldehyde carbon is in the “1” position, unless functional groups of higher precedence are present.
If a prefix form is required, “oxo-” is used (as for ketones), with the position number indicating the end of a chain: CHOCH2COOH is 3-oxopropanoic acid. If the carbon in the carbonyl group cannot be included in the attached chain (for instance in the case of cyclic aldehydes), the prefix “formyl-” or the suffix “-carbaldehyde” is used: C6H11CHO is cyclohexanecarbaldehyde. If an aldehyde is attached to a benzene and is the main functional group, the suffix becomes benzaldehyde.
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دراسة: عدم ترتيب الغرفة قد يدل على مشاكل نفسية
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علماء: تغير المناخ تسبب في ارتفاع الحرارة خلال موسم الحج
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ضمن مؤتمر أسبوع الإمامة باللغة الإنجليزية دراسة تداولية تكشف استراتيجيات الإمام علي (عليه السلام) في خطبه
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