| nitroprusside test | A qualitative test for cystinuria; following the addition of sodium cyanide to the urine, the further addition of nitroprusside produces a red-purple colour if the cyanide has reduced any cystine present to cysteine. (05 Mar 2000) |
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| nitroquinol | <chemistry> A hypothetical nitro derivative of quinol or hydroquinone, not known in the free state, but forming a well defined series of derivatives. Origin: Nitro- + quine + -ol. Source: Websters Dictionary (01 Mar 1998) |
| nitroquinolines | Quinolines substituted in any position by one or more nitro groups. (12 Dec 1998) |
| nitroreductases | <enzyme> Enzymes which reduce nitro groups. A variety of compounds can act as acceptors. If NADH or NADPH are the acceptors, the enzymes are classified as EC 1.6.6.- . Registry number: EC 1.7.- (12 Dec 1998) |
| nitrosalicylic | <chemistry> Of, pertaining to, or designating, a nitro derivative of salicylic acid, Synonym: anilic acid. Origin: Nitro- + salicylic. Source: Websters Dictionary (01 Mar 1998) |
| nitrosamine | <biochemistry> These molecules contain the N N=O group (N nitrosamines): many are carcinogens or suspected carcinogens. (18 Nov 1997) |
| nitrosamines | <chemical> A class of compounds that contain a -nh2 and a -no radical. Many members of this group have carcinogenic and mutagenic properties. Pharmacological action: carcinogens. (12 Dec 1998) |
| nitrosation | Conversion into nitroso compounds. An example is the reaction of nitrites with amino compounds to form carcinogenic n-nitrosamines. (12 Dec 1998) |
| nitrose | <chemistry> See Nitrous. Source: Websters Dictionary (01 Mar 1998) |
| nitroso- | <chemistry, prefix> A prefix (also used adjectively) designating the group or radical NO, called the nitroso group, or its compounds. (29 Oct 1998) |
| nitrosomethylurethane | <chemical> N-methyl-n-nitrosourethane. An alkylating carcinogen that produces gastrointestinal and probably lung and nervous system tumours. Pharmacological action: alkylating agents, carcinogens. Chemical name: Carbamic acid, methylnitroso-, ethyl ester (12 Dec 1998) |
| nitrosomonas | A genus of gram-negative, ellipsoidal or rod-shaped bacteria whose major source of energy and reducing power is from the oxidation of ammonia to nitrite. Its species occur in soils, oceans, lakes, rivers, and sewage disposal systems. (12 Dec 1998) |
| nitrosotransferase | <enzyme> Transfers nitroso group from nitrosamine to an amide receptor Registry number: EC 2.6.- Synonym: transnitrosoase (26 Jun 1999) |
| nitrosourea | Alkylating agent used in the treatment of many neoplasms; an example is BCNU [N,N'-Bis(2-chloroethyl)-N-nitrosourea; carmustine]. (05 Mar 2000) |
| nitrosoureas | A group of anticancer drugs that can cross the blood-brain barrier. Carmustine (bcnu) and lomustine (ccnu) are nitrosoureas. (12 Dec 1998) |
Synonyms :
Synonyms :
Synonyms : Abbott Brand of Sodium Nitroprusside, Bayer Brand of Sodium Nitroprusside, Cyanonitrosylferrate, Faulding Brand of Sodium Nitroprusside, Fides Ecopharma Brand of Sodium Nitroprusside, Ketostix, Naniprus, Nipride, Nipruton, Nitriate, Nitropress
Synonyms :
Synonyms : Oxidoreductases Acting on other Nitrogenous Compounds as Donors
| nitrogen equilibrium |
nitrogenous equilibrium, the condition in which the body is metabolizing and excreting as much nitrogen as it is receiving in the food; cf. nitrogen balance, under balance. Called also protein e.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| nitrohydrochloric acid |
Aqua regia (Latin for "royal water") is a highly corrosive, fuming yellow liquid, formed by a fresh mixture of concentrated nitric acid (otherwise known as aqua fortis) and concentrated hydrochloric acid, usually in the ratio of one to three. It is one of the few reagents able to dissolve gold and platinum. It was so named because it can dissolve the so-called royal, or noble metals, although tantalum and a few other extremely passive metals are able to withstand it. ...
출처: en.wikipedia.org/wiki/Nitrohydrochloric_acid
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| nitrogen narcosis |
Nitrogen narcosis or inert gas narcosis is a reversible alteration in consciousness producing a state similar to alcohol intoxication in SCUBA divers at depths beyond 30m. Jacques Cousteau famously described it as the "rapture of the deep". Its precise mechanism is not well understood, but it appears to be a direct effect of high nitrogen pressure on nerve transmission. ...
출처: en.wikipedia.org/wiki/Nitrogen_narcosis
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| nitrogenase |
Nitrogenase (EC 1.18.6.1)is the enzyme used by organisms to fix atmospheric nitrogen gas (N2). Dinitrogen is relatively inert due to its triple bond. The enzyme therefore requires uses a lot of chemical energy in the form of ATP and reducing agents, such as NADH. The product of the reaction is ammonia, which is normally incorporated into glutamate to form glutamine. The enzyme is composed of a dimer of "MoFe" associated with a dimers of "Fe" each. ...
출처: en.wikipedia.org/wiki/Nitrogenase
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| nitrous oxide |
Nitrous oxide, also known as dinitrogen oxide or dinitrogen monoxide, is a chemical compound with chemical formula N2O. Under room conditions it is a colourless non-flammable gas, with a pleasant slightly sweet odor. It is commonly known as laughing gas due to the exhilarating effects of inhaling it, and because it can cause spontaneous laughter in some users. It is used in surgery and dentistry for its anaesthetic and analgesic effects. ...
출처: en.wikipedia.org/wiki/Nitrous_oxide
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