All articles starting with D

Diphenyl disulfide

Diphenyl disulfide, also called phenyl disulfide, is the simplest aromatic disulfide, a white crystalline organosulfur compound melting near 60 °C used in radical chemistry and sulfenylation.

Diphenyl ether

Diphenyl ether, also called diphenyl oxide or phenoxybenzene, is a colorless aromatic ether used as a heat transfer fluid, notably in DOWTHERM A, and in soap perfumery.

Diphenyl sulfide

Diphenyl sulfide, also called phenyl sulfide, is an organosulfur compound of formula C12H10S with two phenyl groups joined by a sulfur atom, a colorless liquid with an unpleasant odor.

Diphenylamine

Diphenylamine, also called N-phenyl aniline, is an aromatic secondary amine, (C₆H₅)₂NH, used as a propellant stabilizer, antioxidant, dye intermediate, and post-harvest scald treatment for apples.

Diphenyleneiodonium, also called dibenziodolium, is a cyclic diaryliodonium cation that covalently inhibits flavin-containing enzymes; it is the most commonly used inhibitor of NADPH oxidase in experimental research.

Diphenylmethane

Diphenylmethane, also called benzylbenzene, is an aromatic hydrocarbon, C13H12, with a central methylene group linking two phenyl rings, used as a fragrance fixative, dye carrier, and chemical intermediate.

Diphenylphosphine

Diphenylphosphine, IUPAC name diphenylphosphane (Ph₂PH), is a colorless, air-sensitive, pyrophoric secondary phosphine liquid with a boiling point of 280 °C, used chiefly to make phosphine ligands and as a hydrophosphination reagent.

Diphenylpyraline

Diphenylpyraline (CAS 147-20-6, Hispril, Lergobine) is a first-generation piperidine sedating antihistamine, H1 antagonist with anticholinergic action, used for allergic rhinitis and pruritus; also a cocaine-like dopamine transporter inhibitor.

Diphosphine

Diphosphine, also called diphosphane, biphosphine, or hydrogen hemiphosphide, is the liquid phosphorus hydride P₂H₄, the phosphorus analog of hydrazine, best known as the impurity that makes commercial phosphine ignite spontaneously in air.

Diphosphomevalonate decarboxylase

Diphosphomevalonate decarboxylase, also called mevalonate diphosphate decarboxylase (EC 4.1.1.33), is the terminal enzyme of the mevalonate pathway, producing isopentenyl diphosphate for isoprenoid and cholesterol biosynthesis.

Diphtheria

Diphtheria, also called the strangling angel, is a toxin-mediated bacterial disease from Corynebacterium diphtheriae causing throat pseudomembranes; preventable by DTP toxoid vaccine, fatal in 5-10% of cases.

Diphtheria & tetanus toxoids & acellular pertussis vaccine adsorbed

Diphtheria & tetanus toxoids & acellular pertussis vaccine adsorbed, sold as DAPTACEL, is a Sanofi DTaP vaccine approved in the United States in 2002 for infants and children under 7.

Diphtheria and tetanus toxoids and acellular pertussis adsorbed and inactivated poliovirus vaccine

Diphtheria and tetanus toxoids and acellular pertussis adsorbed and inactivated poliovirus vaccine, sold as Quadracel, is a Sanofi Pasteur DTaP-IPV vaccine approved in 2015 for children 4 through 6.

Diphtheria and tetanus toxoids and acellular pertussis adsorbed, inactivated poliovirus, haemophilus b conjugate [meningococcal protein conjugate] and hepatitis b [recombinant] vaccine

Vaxelis (DTaP-IPV-Hib-HepB) is a hexavalent infant combination vaccine by MCM/MSP Vaccine Company, EMA-approved 2016 and FDA-licensed December 21, 2018, given at 2, 4, and 6 months and not used as a booster.

Diphtheria and tetanus vaccine adsorbed

Diphtheria and tetanus vaccine adsorbed (DT, Dual Antigen) is a WHO-prequalified pediatric toxoid vaccine by Serum Institute of India for children under 7 when pertussis vaccination is contraindicated; 0.5 ml IM doses, thiomersal-preserved.

Diphtheria and tetanus vaccine adsorbed for adults and adolescents

Diphtheria and Tetanus Vaccine Adsorbed for Adults and Adolescents (dT) is a WHO-prequalified reduced-diphtheria-antigen toxoid vaccine by Serum Institute of India, prequalified since 4 April 1995, given intramuscularly, stored at 2-8°C with 36-month shelf life.

Diphtheria toxin

Diphtheria toxin, the ADP-ribosylating A-B toxin of Corynebacterium diphtheriae carrying the tox gene, inactivates elongation factor 2 to cause diphtheria; discovered by Roux and Yersin in 1888.

Diphtheria, tetanus, pertussis and haemophilus influenzae type b conjugate vaccine

DTwP-Hib (Diphtheria, tetanus, pertussis and Haemophilus influenzae type b conjugate vaccine), also DTwP+Hib, a tetravalent adsorbed infant combination vaccine; whole-cell pertussis plus Hib conjugate, 3 doses from 6 weeks, WHO-prequalified products from Serum Institute of India and others.

Diphtheria, tetanus, pertussis, hepatitis b and haemophilus influenzae type b conjugate vaccine adsorbed

Diphtheria, tetanus, pertussis, hepatitis B and Haemophilus influenzae type b conjugate vaccine adsorbed (DTwP-HepB-Hib), a WHO-prequalified liquid pentavalent infant vaccine by Serum Institute of India, prequalified 22/09/2010, 2-dose vial, thiomersal-preserved, distinct from hexavalent HEXASII.

Diphthong

Diphthong: a vowel sound in which the tongue moves within one syllable to produce two vowel qualities, from Greek 'two sounds'. Contrasted with hiatus (two syllables) by duration and F2 curvature; reduces to monophthongs; studied in Spanish, Romanian, and English.

Oct 20, 2026

Diphylla

Diphylla, the hairy-legged vampire bat genus (Diphylla ecaudata), a monotypic Desmodontinae bat from Mexico to Brazil that roosts in caves and feeds entirely on bird blood.

Diphyllobothriasis

Diphyllobothriasis, fish or broad tapeworm infection, is an intestinal disease from eating raw or undercooked fish carrying Dibothriocephalus latus and related diphyllobothriid tapeworms; worms exceed 10 m, infections last up to 25 years, and praziquantel treats them.

Diphyllobothriasis and sparganosis

Diphyllobothriasis and sparganosis (ICD-10 B70) are diphyllobothriid tapeworm diseases: intestinal adult-worm infection from raw fish (Dibothriocephalus, Adenocephalus) and tissue larval infection from Spirometra spargana, treated with praziquantel.

Diphyllobothrium

Diphyllobothrium, broad or fish tapeworms (Diphyllobothriidae); most human-infecting species now Dibothriocephalus or Adenocephalus. Two-bothria scolex, up to 15 m adults, fish-borne diphyllobothriasis, eggs 55–75 µm with operculum.

Dipicolinic acid

Dipicolinic acid (pyridine-2,6-dicarboxylic acid, DPA) is a pyridinedicarboxylic acid that accumulates as a calcium chelate in Bacillus and Clostridium endospores, conferring heat resistance, and serves as a tridentate ligand in coordination chemistry.

Dipika Chikhlia

Dipika Chikhlia, also credited Deepika Chikhalia Topiwala, is an Indian actress born 1965 in Mumbai, famous as Sita in Ramanand Sagar's 1987 Doordarshan Ramayan; later a 1991 member of Parliament and producer of Dhartiputra Nandini.

Dipika Kakar

Dipika Kakar Ibrahim (Faiza), born 1986 in Pune, is an Indian TV actress known as Simar in Sasural Simar Ka (2011-2017), winner of Bigg Boss 12 (2018), lead of Kahaan Hum Kahaan Tum, and diagnosed with stage 2 liver cancer in 2025.

Dipika Pallikal

Dipika Pallikal Karthik, Indian squash player from Chennai; first Indian in women's world top 10 (Dec 2012), Arjuna Award 2012, CWG 2014 doubles gold, 2022 World Doubles twin golds, 2023 Asian Games mixed doubles gold; wife of cricketer Dinesh Karthik.

Sep 27, 2026

Dipika Pandey Singh

Dipika Pandey Singh, born 1976, is an Indian National Congress politician serving as a Jharkhand minister for rural development, rural work, and Panchayati Raj, and MLA from Mahagama since 2019.