#161243
Ullmhaítear úsc ón gcraiceann ag baint úsáid as déchlóraimeatán i meán aigéid.
An extract is prepared from the peel using dichloromethane in an acid medium.
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#161286
Beidh an ocsaíd défheinil-2-il sóidiam tar éis athrú go 2-hiodrocsaidéfheinille linn an úsctha i meán aigéadach, agus dá bhrí sin ní fhéadfar idirdhealú a dhéanamh idir ocsaíd défheinil-2-il sóidiam agus 2-hiodrocsaidéfheinil a bheidh ann.
The sodium biphenyl-2yl oxide will have been converted to 2-hydroxybiphenyl during the extraction in an acid medium, and its presence cannot therefore be distinguished from that of 2-hydroxybiphenyl.
#161293
Tar éis é a dhriogadh i meán aigéadach agus a úscadh le cicliheacsán, cuirtear an t-úsc faoi réir chrómatagrafaíocht cisil thanaí ar ghlóthach shilice.
After distillation in an acid medium and extraction by cyclohexane, the extract is subjected to thin layer chromatography on silica gel.
#161352
Tar éis é a dhriogadh i meán aigéadach agus a úscadh le héitear dé-isipeintile, íonghlantar an t-úsc agus cóireáiltear é le tuaslagán 4-aimínfheineasóin.
After distillation in an acid medium and extraction by di-isopentyl eteher, the extract is purified and treated with a solution of 4-aminophenazone.