chlorophenothane |
1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane;an insecticide that came into prominence during and after World War II. For a time it proved very effective, but insect populations rapidly developed tolerance for it, hence much of its original effectiveness has been lost; general usage is now widely discouraged because of the toxicity that results from the environmental persistence of this agent. Synonym: chlorophenothane, dicophane. Acronym: DDT (05 Mar 2000) |
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chlorophyll |
The photosynthetic pigments of higher plants, but closely related to bacteriochlorophylls. Magnesium complexes of tetrapyrolles. (18 Nov 1997) |
chlorophyll a |
Magnesium(II) pheophytinate a [(pheophytina to a)magnesium(II)];the major pigment found in all oxygen-evolving photosynthetic organisms (higher plants, and red and green algae). (05 Mar 2000) |
chlorophyll b |
(CH3 at 7 replaced by CHO in the chlorophyll structure), magnesium(II) pheophytinate b [(pheophytinato b) magnesium(II)]; the chlorophyll generally characteristic of higher plants (including the Chlorophyta, Euglenaphyta, and green algae). Absent in other types of algae. (05 Mar 2000) |
chlorophyll b reductase |
<enzyme> Reduces the 7-formyl group of chlorophyll b to the 7'-hydroxy compound; requires NADPH or NADH; NADPH is more effective Registry number: EC 1.1.1.- Synonym: chlorophyllide b reductase (26 Jun 1999) |
chlorophyll c |
The chlorophyll present in brown algae, diatoms, and flagellates. Two variants are known: c 1, in which two hydrogens are lost from C-17 and C-18, thus resembling phytoporphyrin, and the side chain at C-17 becomes an acrylic residue, -CH==CH2COOH; c2, in which the same changes are noted, but two more hydrogens are lost from the ethyl group at C-8, making this a vinyl residue like that at C-3. The two compounds can thus be named in terms of phytoporphyrin: magnesium 31,32,171,172-tetradehydro-132-(methoxycarbonyl)phytoporphyrinate and magnesium 31,32,81,82,171,172-hexadehydro-132-(methoxycarbonyl)phytoporphyrinate. Synonym: chlorofucin. (05 Mar 2000) |
chlorophyll d |
-CH==CH2 replaced by -CO-CH3 in the chlorophyll structure;the chlorophyll found in red algae (Rhodophyceae), together with chlorophyll a. (05 Mar 2000) |
chlorophyll esterase |
A reversible hydrolyzing enzyme catalyzing the removal of the phytyl group from a chlorophyll, leaving a chlorophyllide. Synonym: chlorophyll esterase. (05 Mar 2000) |
chlorophyll synthetase |
<enzyme> Incorporates geranylgeraniol into chlorophyll; requires ATP; as of 11/80 not clear whether this is a synthetase or a combination of a kinase and a transferase Registry number: EC 6.1.- (26 Jun 1999) |
chlorophyll unit |
The number of chlorophyll molecules required to reduce one molecule of carbon dioxide by photosynthesis. (05 Mar 2000) |
chlorophyllase |
A reversible hydrolyzing enzyme catalyzing the removal of the phytyl group from a chlorophyll, leaving a chlorophyllide. Synonym: chlorophyll esterase. (05 Mar 2000) |
chlorophyllide |
That which remains of a chlorophyll molecule when the phytyl group is removed. (05 Mar 2000) |
chlorophyllides |
Products of the hydrolysis of chlorophylls in which the phytic acid side chain has been removed and the carboxylic acids saponified. (12 Dec 1998) |
Chlorophyta |
<botany> Division of algae containing photosynthetic pigments similar to those in higher plants and having a green colour. Includes unicellular forms, filaments and leaf like thalluses (e.g. Ulva). Some members form coenobia and the Characean algae have branched filaments. (18 Nov 1997) |
chloropicrin |
CCl3NO2; trichloronitromethane;a toxic lung irritant and lacrimatory gas; it also causes vomiting, colic, and diarrhoea, and therefore is called vomiting gas. Synonym: nitrochloroform. (05 Mar 2000) |
Synonyms : Trichloromethane
Synonyms : 3-Caffeoylquinic Acid, 3 Caffeoylquinic Acid, Acid, 3-Caffeoylquinic, Acid, Chlorogenic
Synonyms : Astra Brand of Chloroguanide Hydrochloride, AstraZeneca Brand of Chloroguanide Hydrochloride, Bigumal, Chloriguane, Chloroguanide Hydrochloride, Paludrin, Paludrine, Proguanil Hydrochloride, Zeneca Brand of Chloroguanide Hydrochloride, Hydrochloride, Proguanil
Synonyms :
Synonyms :
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chlordantoin
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(chlor
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chloracne
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(chlor
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chlordecone
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(chlor
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Chlorella
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(Chlo
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chloral
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(chlo
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