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Blue dye also used as a medication
Methylthioninium chloride, commonly called methylene blue, is a salt used as a dye and as a medication. As a medication, it is mainly used to treat methemoglobinemia
Methylene_blue
Topics referred to by the same term
Look up methylene in Wiktionary, the free dictionary. Methylene may refer to: Methylene group or methylene bridge (CH2< or equivalently −CH2−), a part
Methylene
Chemical compound
Dichloromethane (DCM, methylene chloride, or methylene bichloride) is an organochlorine compound with the formula CH2Cl2. This colorless, volatile liquid
Dichloromethane
Chemical group (=CH2)
Methylene (IUPAC name: methylidene, also called carbene or methene) is an organic compound with the chemical formula CH2 (also written [CH2] and not to
Methylene_(compound)
Example of the methylene shuffle: LSD and MiPLA LSD MiPLA The methylene shuffle is a strategy in medicinal chemistry used to modify the hydrophobicity
Methylene_shuffle
Condition of elevated methemoglobin in the blood
a blood gas analysis. Treatment is generally with oxygen therapy and methylene blue. Other treatments may include vitamin C, exchange transfusion, and
Methemoglobinemia
Organic compound (H–CHO); simplest aldehyde
methanediol ("methylene glycol") from iodomethane and silver oxalate. In his paper, Butlerov called formaldehyde "dioxymethylen" (methylene dioxide) because
Formaldehyde
Any part of a molecule with the chemical formula –CH2–
in the rest of the molecule. A methylene bridge is often called a methylene group or simply methylene, as in "methylene chloride" (dichloromethane CH 2Cl
Methylene_bridge
Void between celestial bodies
Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene Methylidynephosphane N2H+ Nitrous oxide Nitroxyl Ozone Potassium cyanide
Outer_space
Chemical compound
Myrcene, or β-myrcene, is a monoterpene. A colorless oil, it occurs widely in essential oils. It is produced mainly semi-synthetically from Myrcia, from
Myrcene
Carbon-oxygen gas
Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene Methylidynephosphane N2H+ Nitrous oxide Nitroxyl Ozone Potassium cyanide
Carbon_dioxide
Chemical group (–CH2–)
A methylene group is any part of a molecule that consists of two hydrogen atoms bound to a carbon atom, which is connected to the remainder of the molecule
Methylene_group
Heterocyclic compound containing a ring of four carbon, one nitrogen and one sulfur atom
psychiatry and allergy treatment, respectively. An earlier derivative, methylene blue, was one of the first antimalarial drugs, and derivatives of phenothiazine
Phenothiazine
Aromatic diisocyanate
Methylene diphenyl diisocyanate (MDI) is an aromatic diisocyanate. Three isomers are common, varying by the positions of the isocyanate groups around
Methylene diphenyl diisocyanate
Methylene_diphenyl_diisocyanate
Substance used as a blue dye and as a medication
New methylene blue (NMB; sometimes Basic Blue 24) is an organic compound of the thiazine class of heterocycles. It is used as a stain and as an antimicrobial
New_methylene_blue
Chemical compound
Methylene imine is an organic compound with the chemical formula H2C=NH. The simplest imine, it is a stable, colorless gas that has been detected throughout
Methylene_imine
Chemical compound
Names Preferred IUPAC name Difluoromethane Other names R-32 Methylene difluoride Methylene fluoride Freon-32 Identifiers CAS Number 75-10-5 Y 3D model
Difluoromethane
Culture medium in microbiology
Eosin methylene blue (EMB, also known as "Levine's formulation") is a selective and differential media used for the identification of Gram-negative bacteria
Eosin_methylene_blue
Color-changing redox chemical reaction
chemical reaction. An aqueous solution containing glucose, sodium hydroxide, methylene blue is prepared in a closed bottle containing some air. Upon standing
Blue_bottle_experiment
Scientific testing method
A methylene blue active substances assay, or MBAS assay, is a colorimetric analysis test method that uses methylene blue to detect the presence of anionic
MBAS_assay
Pharmaceutical compound
6-MeO-RU-28306, or 6-methoxy-RU-28306, also known as 4,α-methylene-5-methoxy-N,N-dimethyltryptamine (4,α-methylene-5-MeO-DMT), is a serotonin receptor modulator
6-MeO-RU-28306
Semi-permanent hair straightening method
in Portugal. The original formulation included formaldehyde H 2CO or methylene glycol H 2C(OH) 2. The two products readily interconvert, and coexist
Brazilian_hair_straightening
Chemical compound
9-Methylene-fluorene or dibenzofulvene (DBF) is a polycyclic aromatic hydrocarbon with chemical formula (C6H4)2C=CH2. It is best known as one product
9-Methylene-fluorene
Chemical compound
Methylene diurea (MDU) is the organic compound with the formula CH2(NHC(O)NH2)2. It is a white water-soluble solid. The compound is formed by the condensation
Methylene_diurea
Family of related stains for examination of blood
Romanowsky effect. Methylene blue that has undergone this oxidative process is known as "polychromed methylene blue". Polychromed methylene blue may contain
Romanowsky_stain
Cyclic chemical compound, (CH2)4O
1,4-Butylene oxide Cyclotetramethylene oxide fraction Furanidin Tetra-methylene oxide Oxolane Identifiers CAS Number 109-99-9 Y 3D model (JSmol) Interactive
Tetrahydrofuran
Chemical compound
Methylene green is a heterocyclic aromatic chemical compound similar to methylene blue. It is used as a dye. It functions as a visible light-activated
Methylene_green
Chemical compound
Dibromomethane or methylene bromide, or methylene dibromide is a halomethane with the formula CH2Br2. It is slightly soluble in water but very soluble
Dibromomethane
Chemical compound
biochemical reactions. It exists in nature as the diastereoisomer [6R]-5,10-methylene-THF. As an intermediate in one-carbon metabolism, 5,10-CH2-THF converts
5,10-Methylenetetrahydrofolate
5,10-Methylenetetrahydrofolate
Chemical compound
Methanediamine is the simplest geminal diamine. Its chemical formula is CH2(NH2)2, and its structure consists of two amino groups on a central carbon atom
Methanediamine
Chemical compound, polyacrylamide crosslinker
N,N′-Methylenebisacrylamide (MBAm or MBAA, colloquially "bis") is the organic compound with the formula CH2[NHC(O)CH=CH2]2. A colorless solid, this compound
N,N'-Methylenebisacrylamide
Chemical compound
Methylenecyclohexane is an unsaturated hydrocarbon, containing a cyclohexane ring with a methylene (methylidine) group attached. Methylcyclohexane Methylenecyclopropane
Methylenecyclohexane
Type of fatty acid defined by molecular bonds
single methylene bridge (−CH2−). This form is also sometimes called a divinylmethane pattern. The essential fatty acids are all omega-3 and -6 methylene-interrupted
Polyunsaturated_fat
Psychedelic drug
2C-B in which the β position has been connected to the 6 position by a methylene bridge to form a benzocyclobutene ring system. It is unclear whether TCB-2
TCB-2
Chemical compound
Diiodomethane or methylene iodide, commonly abbreviated "MI", is an organoiodine compound. Diiodomethane is a very dense colorless liquid; however, it
Diiodomethane
Component primarily utilized for making cushions or mattresses
with polyurethane foam production include methylene chloride, toluene diisocyanate, methyl chloroform, methylene diphenyl diisocyanate, propylene oxide,
Memory_foam
Chemical compound
Bay R 1531, also known as LY-197206 or as 4,α-methylene-5-MeO-DPT, is a tricyclic tryptamine derivative. It acts as a selective serotonin 5-HT1A receptor
Bay_R_1531
Chemical compound
ATMP Names Preferred IUPAC name [Nitrilotris(methylene)]tris(phosphonic acid) Other names Tris(phosphonomethyl)amine Nitrilotrimethylphosphonic acid
ATMP
Poly(p-phenylene methylene) is an organic polymer with the formula (C6H4CH2)n. In the simplest formulation, it consists of 1,4-phenylene rings linked by methylene groups
Poly(p-phenylene_methylene)
Chemical compound
Bromochloromethane or methylene bromochloride and Halon 1011 is a mixed halomethane. It is a heavy low-viscosity liquid with refractive index 1.4808.
Bromochloromethane
Chemical compound
Theimer, E. T.; Steinbach, L.; Wolt, J. (1965). "α-Myrcene (2-Methyl-6-methylene-1,7-octadiene)". The Journal of Organic Chemistry. 30 (2): 646–648. doi:10
Α-Myrcene
Chemical compound
DTPMP or diethylenetriamine penta(methylene phosphonic acid) is a phosphonic acid. It has chelating and anti-corrosion properties. DTPMP is normally delivered
DTPMP
Chemical compound
LY-293284, also known as 4,α-methylene-5-acetyl-DPT, is a research chemical developed by the pharmaceutical company Eli Lilly and used for scientific
LY-293284
Chemical compound
Substances Control Act (TSCA)" along with four other toxic chemicals. Methylene diphenyl diisocyanate Toluene diisocyanate NIOSH Pocket Guide to Chemical
4,4'-Methylenebis(2-chloroaniline)
4,4'-Methylenebis(2-chloroaniline)
CH3OH; simplest possible alcohol
word "methylène" to organic chemistry, forming it from Greek methy = "alcoholic liquid" + hȳlē = "forest, wood, timber, material". "Methylène" designated
Methanol
Functional group
The methylenedioxy group consists of two oxygen atoms connected to a methylene bridge (−CH2− unit). The methylenedioxy group is generally found attached
Methylenedioxy
Chemical compound of hydrogen and oxygen
Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene Methylidynephosphane N2H+ Nitrous oxide Nitroxyl Ozone Potassium cyanide
Water
Chemical compound
2-Methylene glutaronitrile is a dimerization product of acrylonitrile and a starting material for di- and triamines, for the biocide
2-Methyleneglutaronitrile
Chemical compound
formaldehyde exists predominantly in solution as a dynamic equilibrium of methylene glycol oligomers, the concentration of the reactive form of formaldehyde
Phenol_formaldehyde_resin
Combination drug
Hyoscyamine/hexamethylenetetramine/phenyl salicylate/methylene blue/benzoic acid is a combination drug used to treat pain caused by urinary tract
Hyoscyamine/hexamethylenetetramine/phenyl salicylate/methylene blue/benzoic acid
Hyoscyamine/hexamethylenetetramine/phenyl_salicylate/methylene_blue/benzoic_acid
Ion of carbon with three hydrogens
carbenium, methyl cation, or protonated methylene) is a cation with the formula CH+ 3. It can be viewed as a methylene radical (:CH 2) with an added proton
Methenium
Engineering thermoplastic polymer
Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high
Polyoxymethylene
Chemical compound
16-Methylene-17α-hydroxyprogesterone acetate is a progestin of the 17α-hydroxyprogesterone group which was never marketed. Given orally, it shows about
16-Methylene-17α-hydroxyprogesterone acetate
16-Methylene-17α-hydroxyprogesterone_acetate
Chemical coupling reaction
ketones to alkenes. Most often, the Wittig reaction is used to introduce a methylene group using methylenetriphenylphosphorane (Ph3P=CH2). Using this reagent
Wittig_reaction
Chemical compound
Heliotropin; Heliotropine; Piperonyl aldehyde; Protocatechuic aldehyde methylene ether; 3,4-methylenedioxybenzaldehyde; Identifiers CAS Number 120-57-0 Y
Piperonal
German physician and scientist (1854–1915)
Ehrlich came across methylene blue, which he regarded as particularly suitable for staining bacteria. Later, Robert Koch also used methylene blue as a dye in
Paul_Ehrlich
Chemical compound
groups. The titanium and aluminium atoms are linked together by both a methylene bridge (-CH2-) and a chloride atom in a nearly square-planar (Ti–CH2–Al–Cl)
Tebbe's_reagent
Chemical compound
Thiopropanone Thioacetone Dimethyl thioketone Sulfocarbon dimethanide (Dimethyl)methylene sulfide Sulfoacetone Sulfopropanone Identifiers CAS Number 4756-05-2 monomer
Thioacetone
Chemical compound
3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol is a synthetic, steroidal estrogen and a selective agonist of the ERβ. It was discovered serendipitously
3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol
3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol
Organic compound, (CH2)2C=CH2
hydrocarbon which, as the name suggests, is derived from the addition of a methylene (=CH2) substituent to a cyclopropane ring. It is a colourless, easily
Methylenecyclopropane
Chemical compound
isocyanate) or methylene bis(4-cyclohexylisocyanate) and has the formula CH2[(C6H10)NCO]2. The product is manufactured by hydrogenation of methylene diphenyl
Hydrogenated_MDI
Periodic motion of the atoms of a molecule
bonds, such as the HCH angle in a methylene group Rocking: a change in angle between a group of atoms, such as a methylene group and the rest of the molecule
Molecular_vibration
Chemical compound
RU-28306, also known as 4,α-methylene-N,N-dimethyltryptamine (4,α-methylene-DMT), is a synthetic indole alkaloid derivative which acts as a serotonin
RU-28306
Chemical compound
Medronic acid (conjugate base, medronate), also known as methylene diphosphonate, is the smallest bisphosphonate. Its complex with radioactive technetium
Medronic_acid
Chemical reaction which adds a –CH2– group to a molecule
organic chemistry, methylenation is a chemical reaction that inserts a methylene (−CH2−) group into a chemical compound: A − B ⟶ A − CH 2 − B {\displaystyle
Methylenation
Medical condition
Methylenetetrahydrofolate reductase deficiency is the most common genetic cause of elevated serum levels of homocysteine (hyperhomocysteinemia). It is
Methylenetetrahydrofolate reductase deficiency
Methylenetetrahydrofolate_reductase_deficiency
Technique used to enhance visual contrast of specimens observed under a microscope
that enter and stain living cells are called supravital stains (e.g. New Methylene Blue and brilliant cresyl blue for reticulocyte staining). However, these
Staining
Pharmaceutical compound
LY-178210, also known as LY-228729 or as 4,α-methylene-5-carboxamido-DPT, is a selective and highly potent serotonin 5-HT1A receptor partial agonist.
LY-178210
pH indicator
indicator (pH value: 4.4–6.2), mixed indicator composed of a solution of methylene blue (0.1%) and methyl red (0.03%) in ethanol or in methanol. It can be
Tashiro's_indicator
Chemical compound
Isoprednidene Clinical data Other names StC 407; 6-Dehydro-16-methylene hydrocortisone; 11β,17α,21-Trihydroxy-16-methylenepregna-4,6-diene-3,20-dione
Isoprednidene
Pharmaceutical compound
LY-301317, also known as (R)-4,α-methylene-5-(1,3-oxazol-5-yl)-N,N-dipropyltryptamine ((R)-4,α-methylene-5-(1,3-oxazol-5-yl)-DPT), is a potent and selective
LY-301317
Carbon-containing chemical compound
Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene Methylidynephosphane N2H+ Nitrous oxide Nitroxyl Ozone Potassium cyanide
Organic_compound
Re-enameling process
2000 related to the usage of methylene chloride for bathtub refinishing. Products containing high percentages of methylene chloride are used as stripping
Bathtub_refinishing
Class of organometalic compounds
example of this family of compounds is Tebbe's reagent. It features a methylene bridge joining titanium and aluminum. Metal carbene complexes have applications
Transition metal carbene complex
Transition_metal_carbene_complex
Forms during electrophilic substitution on benzene ring
are consistent with a cyclohexadienyl cation structure. In one study a methylene arenium ion is stabilized by metal complexation: In this reaction sequence
Arenium_ion
Chemical group (–CH3) derived from methane
Peligot, after determining methanol's chemical structure, introduced "methylene" from the Greek μέθυ (methy) "wine" and ὕλη (hȳlē) "wood, patch of trees"
Methyl_group
Pharmaceutical compound
RU-28251, also known as 4,α-methylene-N,N-dipropyltryptamine (4,α-methylene-DPT), is a tricyclic cyclized tryptamine and simplified or partial ergoline
RU-28251
Chemical compound
acid such as aluminium chloride: C6H5CH2Cl + C6H6 → (C6H5)2CH2 + HCl The methylene group in diphenylmethane is mildly acidic with a pKa of 32.2, and so can
Diphenylmethane
Dangerously low blood pressure due to damage from an organ infection
multiple meta-analyses that suggest that methylene blue could reduce mortality in cases of septic shock. Methylene blue has also been shown to reduce time
Septic_shock
Pharmaceutical compound
FHATHBIN, also known as 5-hydroxy-11-aminotetrahydrobenzindole or as 4,α-methylene-5-HT, is a serotonin receptor agonist of the partial ergoline group. It
FHATHBIN
Chemical compound
smears, and is often used in Giemsa stain. It's formed via oxidation of Methylene blue. "Azure A - Dyes for Histology". StainsFile. Retrieved 2025-07-28
Azure_A
Nucleotide
5'-guanosyl-methylene-triphosphate (GDPCP) and 5'-adenosyl-methylene-triphosphate (ADPCP) are analogues of guanosine 5'-triphosphate (GTP) and adenosine
NDPCP
Chemical compound
The four vertices are occupied by nitrogen atoms, which are linked by methylene groups. Although the molecular shape defines a cage, no void space is
Hexamethylenetetramine
Organic molecule containing a neutral carbon with two unbound valence electrons
term "carbene" may also refer to the specific compound :CH2, also called methylene, the parent hydride from which all other carbene compounds are formally
Carbene
Chemical compound
Bis-oxadiazole, or more formally known as bis(1,2,4-oxadiazole)bis(methylene) dinitrate, is a nitrated heterocyclic compound of the oxadiazole family
Bis-oxadiazole
Chemical reaction
The Riley oxidation is a selenium dioxide-mediated oxidation of methylene groups adjacent to carbonyls. It was first reported by Harry Lister Riley and
Riley_oxidation
Chemical compound
disease and other neurodegenerative diseases. Thioflavin T (Basic Yellow 1, Methylene yellow, CI 49005, or ThT) is a benzothiazole salt obtained by the methylation
Thioflavin
Chemical compound
Dimethylformal (DMFL) Formaldehyde dimethylacetal Methoxymethyl methyl ether Methylene dimethyl ether Identifiers CAS Number 109-87-5 Y 3D model (JSmol) Interactive
Dimethoxymethane
Organic compound (CH2(OH)2); simplest geminal diol
Methanediol, also known as formaldehyde monohydrate or methylene glycol, is an organic compound with chemical formula CH2(OH)2. It is the simplest geminal
Methanediol
Chemical compound
a tridentate methylidine ligand. The methylene ligand (H2C) is then poised couple to CO or to another methylene, thereby growing the C–C chain. The methylylidyne
Methylidyne_radical
Chemical compound
EDTMP or ethylenediamine tetra(methylene phosphonic acid) is a phosphonic acid. It has chelating and anti corrosion properties. EDTMP is the phosphonate
EDTMP
Matter with biological processes
Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene Methylidynephosphane N2H+ Nitrous oxide Nitroxyl Ozone Potassium cyanide
Life
Class of chemical compounds
LY-178210 (LY-228729; 4,α-methylene-5-carboxamido-DPT), Bay R 1531 (LY-197206; 4,α-methylene-5-MeO-DPT), and LY-293284 (4,α-methylene-5-acetyl-DPT), are selective
Partial_lysergamide
Hematologic stain that facilitates the visual differentiation of blood cell types
differentiation of blood cell types. It is classically a mixture of eosin (red) and methylene blue dyes. It is used primarily to stain peripheral blood smears, urine
Wright's_stain
Chemical compound
Bisoctrizole (INN/USAN, INCI methylene bis-benzotriazolyl tetramethylbutylphenol, marketed as Tinosorb M, Parsol Max, Eversorb M, and Milestab 360, among
Bisoctrizole
Chemical compound
dithiophosphoric acid in ethanol. Other methods of synthesis include the reaction of methylene bromide and sodium diethyl phosphorodithioate or the reaction of diethyl
Ethion
Chemical group (–CH2–C6H5)
structure R−CH2−C6H5. Benzyl features a benzene ring (C6H6) attached to a methylene group (−CH2−). In IUPAC nomenclature, the prefix benzyl refers to a C6H5CH2
Benzyl_group
Diagnostic technique
and trypanosomas. It is based on a methanolic mixture of "polychromed" methylene blue (i.e. demethylated into various azures) and eosin. The methanolic
Leishman_stain
Chemical data page
Standard temperature and pressure. Reliability of data general note. "Methylene Chloride". chemicalland21.com. Retrieved 29 May 2007. CRC Handbook of
Dichloromethane_(data_page)
Nontransparent thermosetting polymer
insoluble derivative.) B. Tollens (1896) "Ueber den Methylen-Harnstoff" (On methylene-urea), Berichte der deutschen chemischen Gesellschaft, 29 (3) : 2751–2752
Urea-formaldehyde
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