| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
methane
Methane: The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed). methane : A one-carbon compound in which the carbon is attached by single bonds to four hydrogen atoms. It is a colourless, odourless, non-toxic but flammable gas (b.p. -161degreeC). | 2.03 | 1 | 0 | alkane;
gas molecular entity;
mononuclear parent hydride;
one-carbon compound | bacterial metabolite;
fossil fuel;
greenhouse gas |
chlorine
chloride : A halide anion formed when chlorine picks up an electron to form an an anion. | 1.96 | 1 | 0 | halide anion;
monoatomic chlorine | cofactor;
Escherichia coli metabolite;
human metabolite |
nickel
Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.. nickel ion : A nickel atom having a net electric charge.. nickel atom : Chemical element (nickel group element atom) with atomic number 28. | 4.73 | 29 | 0 | metal allergen;
nickel group element atom | epitope;
micronutrient |
nitrates
Nitrates: Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical. | 3.4 | 7 | 0 | monovalent inorganic anion;
nitrogen oxoanion;
reactive nitrogen species | |
diphenyleneiodonium
diphenyleneiodonium: structure in first source; NADPH oxidase inhibitor. dibenziodolium : An organic cation that is fluorene in which the methylene group is replaced by a positively charged iodine. | 2.08 | 1 | 0 | organic cation | |
glutaral
Glutaral: One of the protein CROSS-LINKING REAGENTS that is used as a disinfectant for sterilization of heat-sensitive equipment and as a laboratory reagent, especially as a fixative.. glutaraldehyde : A dialdehyde comprised of pentane with aldehyde functions at C-1 and C-5. | 1.97 | 1 | 0 | dialdehyde | cross-linking reagent;
disinfectant;
fixative |
methenamine
Methenamine: An anti-infective agent most commonly used in the treatment of urinary tract infections. Its anti-infective action derives from the slow release of formaldehyde by hydrolysis at acidic pH. (From Martindale, The Extra Pharmacopoeia, 30th ed, p173). hexamethylenetetramine : A polycyclic cage that is adamantane in which the carbon atoms at positions 1, 3, 5 and 7 are replaced by nitrogen atoms. | 2.05 | 1 | 0 | polyazaalkane;
polycyclic cage;
tetramine | antibacterial drug |
urethane
[no description available] | 1.98 | 1 | 0 | carbamate ester | fungal metabolite;
mutagen |
zinc chloride
zinc chloride: RN given refers to parent cpd. zinc dichloride : A compound of zinc and chloride ions in the ratio 1:2. It exists in four crystalline forms, in each of which the Zn(2+) ions are trigonal planar coordinated to four chloride ions. | 1.96 | 1 | 0 | inorganic chloride;
zinc molecular entity | astringent;
disinfectant;
EC 5.3.3.5 (cholestenol Delta-isomerase) inhibitor;
Lewis acid |
tyrosine
Tyrosine: A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.. tyrosine : An alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring. | 2.04 | 1 | 0 | amino acid zwitterion;
erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid;
proteinogenic amino acid;
tyrosine | EC 1.3.1.43 (arogenate dehydrogenase) inhibitor;
fundamental metabolite;
micronutrient;
nutraceutical |
tryptophan
Tryptophan: An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.. tryptophan : An alpha-amino acid that is alanine bearing an indol-3-yl substituent at position 3. | 2.04 | 1 | 0 | erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid zwitterion;
L-alpha-amino acid;
proteinogenic amino acid;
tryptophan zwitterion;
tryptophan | antidepressant;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite |
acetonitrile
acetonitrile: RN given refers to unlabeled cpd. acetonitrile : A nitrile that is hydrogen cyanide in which the hydrogen has been replaced by a methyl group. | 2.03 | 1 | 0 | aliphatic nitrile;
volatile organic compound | EC 3.5.1.4 (amidase) inhibitor;
NMR chemical shift reference compound;
polar aprotic solvent |
nickel acetate
[no description available] | 2 | 1 | 0 | | |
ninhydrin
Ninhydrin: 2,2-Dihydroxy-1H-indene-1,3-(2H)-dione. Reagent toxic to skin and mucus membranes. It is used in chemical assay for peptide bonds, i.e., protein determinations and has radiosensitizing properties.. ninhydrin : A member of the class of indanones that is indane-1,3-dione bearing two additional hydroxy substituents at position 2. | 1.96 | 1 | 0 | aromatic ketone;
beta-diketone;
indanones;
ketone hydrate | colour indicator;
human metabolite |
bisphenol a-glycidyl methacrylate
Bisphenol A-Glycidyl Methacrylate: The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials. | 1.98 | 1 | 0 | diarylmethane | |
copper(ii) nitrate
copper(II) nitrate : An inorganic nitrate salt having copper(2+) as the couterion. | 2.11 | 1 | 0 | inorganic nitrate salt | |
lanthanum
[no description available] | 2.68 | 3 | 0 | f-block element atom;
lanthanoid atom;
scandium group element atom | |
molybdenum
Molybdenum: A metallic element with the atomic symbol Mo, atomic number 42, and atomic weight 95.95. It is an essential trace element, being a component of the enzymes xanthine oxidase, aldehyde oxidase, and nitrate reductase. | 2.03 | 1 | 0 | chromium group element atom | micronutrient |
palladium
Palladium: A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.. palladium : Chemical element (nickel group element atom) with atomic number 46. | 2.02 | 1 | 0 | metal allergen;
nickel group element atom;
platinum group metal atom | |
cadmium
Cadmium: An element with atomic symbol Cd, atomic number 48, and atomic weight 112.41. It is a metal and ingestion will lead to CADMIUM POISONING.. elemental cadmium : An element in the zinc group of the periodic table with atomic number 48, atomic mass 112, M.P. 321degreeC, and B.P. 765degreeC). An odourless, tasteless, and highly poisonous soft, ductile, lustrous metal with electropositive properties. It has eight stable isotopes: (106)Cd, (108)Cd,(110)Cd, (111)Cd, (112)Cd, (113)Cd, (114)Cd and (116)Cd, with (112)Cd and (114)Cd being the most common. | 1.96 | 1 | 0 | cadmium molecular entity;
zinc group element atom | |
cupric chloride
cupric chloride: RN given refers to unlabeled parent cpd. copper(II) chloride : An inorganic chloride of copper in which the metal is in the +2 oxidation state. | 2.03 | 1 | 0 | copper molecular entity;
inorganic chloride | EC 5.3.3.5 (cholestenol Delta-isomerase) inhibitor |
nickel chloride
nickel chloride: RN given refers to cpd with MF of Ni-Cl2. nickel dichloride : A compound of nickel and chloride in which the ratio of nickel (in the +2 oxidation state) to chloride is 1:2. | 3.09 | 5 | 0 | nickel coordination entity | calcium channel blocker;
hapten |
silver nitrate
Silver Nitrate: A silver salt with powerful germicidal activity. It has been used topically to prevent OPHTHALMIA NEONATORUM. | 2.11 | 1 | 0 | inorganic nitrate salt;
silver salt | astringent |
zinc nitrate
[no description available] | 7.46 | 2 | 0 | | |
nickel sulfate
nickel sulfate: RN given refers to cpd with MF of Ni(2+)-H2SO4. nickel sulfate : A metal sulfate having nickel(2+) as the metal ion. | 2.93 | 4 | 0 | metal sulfate | allergen |
sodium hydride
[no description available] | 2.15 | 1 | 0 | | |
strontium nitrate
[no description available] | 2 | 1 | 0 | | |
lead nitrate
lead nitrate: RN given refers to unspecified lead nitrate | 2.11 | 1 | 0 | inorganic nitrate salt;
lead coordination entity | |
cobaltous nitrate
cobaltous nitrate: RN given refers to Co(+2) salt. cobalt dinitrate : A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is nitrate. | 2.03 | 1 | 0 | cobalt salt;
inorganic nitrate salt | |
cadmium nitrate
cadmium nitrate: RN given refers to parent cpd. cadmium nitrate : An inorganic nitrate salt having Cd(2+) as the counterion. | 2.7 | 3 | 0 | cadmium salt;
inorganic nitrate salt | carcinogenic agent;
genotoxin;
hepatotoxic agent |
magnesium nitrate
magnesium nitrate : The inorganic nitrate salt of magnesium. | 2.02 | 1 | 0 | inorganic nitrate salt;
magnesium salt | fertilizer |
nickel sulfide
nickel sulfide: RN given refers to cpd with MF of Ni-S; see also nickel subsulfide: 12035-72-2 | 1.98 | 1 | 0 | | |
fluorides
[no description available] | 2.13 | 1 | 0 | halide anion;
monoatomic fluorine | |
phenyl acetate
phenyl acetate: The ester formed between phenol and acetic acid. Don't confuse with phenylacetic acid derivatives listed under PHENYLACETATES.. phenyl acetate : An acetate ester obtained by the formal condensation of phenol with acetic acid. | 2 | 1 | 0 | benzenes;
phenyl acetates | |
vanadyl sulfate
[no description available] | 2.04 | 1 | 0 | metal sulfate;
vanadium coordination entity | |
monoammonium molybdate
ammonium molybdate: RN given refers to unspecified ammonium molybdate salt. ammonium molybdate : An ammonium salt composed of ammonium and molybdate ions in a 2:1 ratio. | 2.03 | 1 | 0 | ammonium salt | poison |
glycarbylamide
[no description available] | 2.03 | 1 | 0 | | |
aluminum nitride
[no description available] | 2.15 | 1 | 0 | nitride | |
cobalt
Cobalt: A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.. cobalt(1+) : A monovalent inorganic cation obtained from cobalt.. cobalt atom : A cobalt group element atom that has atomic number 27. | 2.03 | 1 | 0 | cobalt group element atom;
metal allergen | micronutrient |
nickel monoxide
[no description available] | 1.98 | 1 | 0 | | |
lead
Lead: A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.2, symbol Pb. | 2.11 | 1 | 0 | carbon group element atom;
elemental lead;
metal atom | neurotoxin |
aluminum
Aluminum: A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98. | 2.03 | 1 | 0 | boron group element atom;
elemental aluminium;
metal atom | |
strontium
Strontium: An element of the alkaline earth family of metals. It has the atomic symbol Sr, atomic number 38, and atomic weight 87.62. | 2 | 1 | 0 | alkaline earth metal atom | |
arsenic
Arsenic: A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed) | 2.01 | 1 | 0 | metalloid atom;
pnictogen | micronutrient |
sulfur
Sulfur: An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine. | 2.01 | 1 | 0 | chalcogen;
nonmetal atom | macronutrient |
phosphorus
Phosphorus: A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions. | 2.05 | 1 | 0 | monoatomic phosphorus;
nonmetal atom;
pnictogen | macronutrient |
selenium
Selenium: An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE. | 2.42 | 2 | 0 | chalcogen;
nonmetal atom | micronutrient |
zeolites
[no description available] | 2.08 | 1 | 0 | | |
aluminum oxide
Aluminum Oxide: An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories. | 2.03 | 1 | 0 | | |
sepharose
agarose : A linear polysaccharide made up from alternating D-galactose and 3,6-anhydro-alpha-L-galactopyranose residues joined by alpha-(1->3)- and beta-(1->4)-linkages. | 1.98 | 1 | 0 | | |
lanthanide nitrate
[no description available] | 2.01 | 1 | 0 | | |
ascorbic acid
Ascorbic Acid: A six carbon compound related to glucose. It is found naturally in citrus fruits and many vegetables. Ascorbic acid is an essential nutrient in human diets, and necessary to maintain connective tissue and bone. Its biologically active form, vitamin C, functions as a reducing agent and coenzyme in several metabolic pathways. Vitamin C is considered an antioxidant.. L-ascorbic acid : The L-enantiomer of ascorbic acid and conjugate acid of L-ascorbate.. L-ascorbate : The L-enantiomer of ascorbate and conjugate base of L-ascorbic acid, arising from selective deprotonation of the 3-hydroxy group. Required for a range of essential metabolic reactions in all animals and plants.. vitamin C : Any member of a group of vitamers that belong to the chemical structural class called butenolides that exhibit biological activity against vitamin C deficiency in animals. The vitamers include L-ascorbic acid and its salt, ionized and oxidized forms. | 2.02 | 1 | 0 | ascorbic acid;
vitamin C | coenzyme;
cofactor;
flour treatment agent;
food antioxidant;
food colour retention agent;
geroprotector;
plant metabolite;
skin lightening agent |
metallothionein
Metallothionein: A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals. | 2.04 | 1 | 0 | | |