derivate

• n.

• 誘導体、派生物

関

analog、derivative

WordNet

1. resulting from or employing derivation; "a derivative process"; "a highly derivative prose style"
2. a compound obtained from, or regarded as derived from, another compound
3. (linguistics) a word that is derived from another word; "`electricity is a derivative of `electric"

PrepTutorEJDIC

1. 派生した,由来した;独創性のない,借り物めいた / 派生語 / 派生した物

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/02/04 14:55:32」(JST)

wiki en

[Wiki en表示]

"Derivate" redirects here. For various senses of its synonym "derivative", see Derivative (disambiguation).

Derivatization is a technique used in chemistry which transforms a chemical compound into a product (the reaction's derivate) of similar chemical structure, called a derivative.

Generally, a specific functional group of the compound participates in the derivatization reaction and transforms the educt to a derivate of deviating reactivity, solubility, boiling point, melting point, aggregate state, or chemical composition. Resulting new chemical properties can be used for quantification or separation of the educt.

Derivatization techniques are frequently employed in chemical analysis of mixtures and in surface analysis, e.g. in x-ray photoelectron spectroscopy where newly incorporated atoms label characteristic groups.

Derivatization reactions

Several characteristics are desirable for a derivatization reaction:

1. The reaction is reliable and proceeds to completion. Less unreacted starting material will simplify analysis. Also, this allows a small amount of analyte to be used.
2. The reaction is general, allowing a wide range of substrates, yet specific to a single functional group, reducing complicating interference.
3. The products are relatively stable, and form no degradation products within a reasonable period, facilitating analysis.

Some examples of good derivatization reactions are the formation of esters and amides via acyl chlorides.

Classical qualitative organic analysis

Classical qualitative organic analysis usually involves reacting an unknown sample with various reagents; a positive test usually involves a change in appearance — color, precipitation, etc.

These tests may be extended to give sub-gram scale products. These products may be purified by recrystallization, and their melting points taken. An example is the formation of 2,4-dinitrophenylhydrazones from ketones and 2,4-dinitrophenylhydrazine.

By consulting an appropriate reference table such as in Vogel's, the identity of the starting material may be deduced. The use of derivatives has traditionally been used to determine or confirm the identity of an unknown substance. However, due to the wide range of chemical compounds now known, it is unrealistic for these tables to be exhaustive. Modern spectroscopic and spectrometric techniques have made this technique obsolete for all but pedagogical purposes.

For gas chromatography

Polar N-H and O-H groups on which give hydrogen bonding may be converted to relatively nonpolar groups on a relatively nonvolatile compound. The resultant product may be less polar, thus more volatile, allowing analysis by gas chromatography. Bulky, nonpolar silyl groups are often used for this purpose.

Chiral derivatizing agent

Main article: Chiral derivatizing agent

Chiral derivatizing agents react with enantiomers to give diastereomers. Since diastereomers have different physical properties, they may be further analyzed by HPLC and NMR spectroscopy.

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Related Links

• Derivate | Definition of Derivate by Merriam-Webster

Seen and Heard What made you want to look up derivate? Please tell us where you read or heard it (including the quote, if possible). ... Evangelical What is 'the evangelical vote', and when did we start calling it that? Pussyfoot Palin ...

• Derivate | Define Derivate at Dictionary.com

On the contrary, there are distinct reasons for thinking that the Vertebrate mouth is a derivate of the blastopore.

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★リンクテーブル★

リンク元	「analog」「誘導体」「derivative」「派生物」

「analog」

　　[★]

• n.

• 類似体、類似物、類縁体、アナログ、類似化合物、誘導体

関

analogue、derivate、derivative、relative

linux

• analogのオプション

1	YEARLY	年別レポート
Q	QUARTERLY	4半期別レポート
m	MONTHLY	月別レポート
W	WEEKLY	週別レポート	ON
D	DAILYREP	日別レポート	ON
d	DAILYSUM	曜日別集計
H	HOURLYREP	時間別レポート	ON
h	HOURLYSUM	時間別集計	ON
w	WEEKHOUR	曜日別時間集計
4	QUARTERREP	15分間隔レポート	ON
6	QUARTERSUM	15分間隔集計	ON
5	FIVEREP	5分間隔レポート
7	FIVESUM	5分間隔集計
S	HOST	ホストレポート	ON
l	REDIRHOST	ホストリダイレクションレポート	ON
L	FAILHOST	ホスト不成功レポート	ON
Z	ORGANISATION	組織レポート	ON
o	DOMAIN	ドメインレポート	ON
r	REQUEST	リクエストレポート	ON
i	DIRECTORY	ディレクトリレポート	ON
t	FILETYPE	ファイル種類別レポート	ON
z	SIZE	ファイルサイズレポート	ON
P	PROCTIME	処理時間レポート	ON
E	REDIR	リダイレクトレポート	ON
I	FAILURE	不成功レポート	ON
f	REFERRER	リンク元レポート	ON
s	REFSITE	リンク元サイトレポート	ON
N	SEARCHQUERY	検索語句レポート	ON
n	SEARCHWORD	検索語レポート	ON
Y	INTSEARCHQUERY	内部検索語句レポート	ON
y	INTSEARCHWORD	内部検索単語レポート	ON
k	REDIRREF	リダイレクトされたリンク元URLレポート	ON
K	FAILREF	不成功リンク元レポート	ON
B	FULLBROWSER	ブラウザーレポート	ON
b	BROWSER	ブラウザーの概要	ON
p	OSREP	OSレポート	ON
v	VHOST	仮想ホストレポート	ON
R	REDIRVHOST	仮想ホストリダイレクションレポート	ON
M	FAILVHOST	仮想ホスト不成功レポート	ON
u	USER	ユーザレポート	ON
j	REDIRUSER	ユーザリダイレクションレポート	ON
J	FAILUSER	不成功ユーザレポート	ON
c	STATUS	状態コードレポート	ON

「誘導体」

　　[★]

英

derivative、analog、derivate

関

アナログ、系薬物、派生的、類縁体、類似体、類似物、派生物、類似化合物

「derivative」

　　[★]

• n.

• 誘導体、類縁体、系薬物、派生物

• adj.

• 派生的な

関

analog、analogue、derivate、relative

　 　 　 　

「派生物」

　　[★]

英

derivative、derivate

関

系薬物、派生的、誘導体、類縁体