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  • amine
  • Polar groups, hydroxyls and amine groups can form acid-base and hydrogen bonds with polar groups on substrates like paper or wood or natural fibers. (wikipedia.org)
  • Amine blends that are activated by concentrated piperazine are used extensively in commercial CO2 removal for carbon capture and storage (CCS) because piperazine advantageously allows for protection from significant thermal and oxidative degradation at typical coal flue gas conditions. (wikipedia.org)
  • nonetheless, the CO2 absorption rate, heat of absorption, and solvent capacity are increased through the addition of piperazine to amine gas treating solvents, the most common of which is MDEA due to its unmatched high rate and capacity efficiency. (wikipedia.org)
  • citrate
  • 6H2O, which melts at 44 °C and boils at 125-130 °C. Two common salts in the form of which piperazine is usually prepared for pharmaceutical or veterinary purposes are the citrate, 3C4H10N2.2C6H8O7 (i.e. containing 3 molecules of piperazine to 2 molecules of citric acid), and the adipate, C4H10N2.C6H10O4 (containing 1 molecule each of piperazine and adipic acid). (wikipedia.org)
  • Urosolvine contains, in the form of effervescent salts, piperazine (0.128 grams) (increases the solubility of urates), colchicine (0.3 milligrams) (brings rapid relief in cases of acute gout attacks), atropine (0.128 milligrams) (relieves spasms of the urinary tract) and sodium citrate (an alkalinizing agent). (wikipedia.org)
  • TFMPP
  • Piperazines, especially BZP and TFMPP were extremely common adulterants in the club and rave scene, often being passed off as MDMA, although they do not share many similarities in their effects. (wikipedia.org)
  • amino
  • An amphoteric ion-permeable composite membrane composed of a microporous substrate, and supported on the substrate, a thin amphoteric ion-exchange film formed of an active amino group-containing polymer which has been interfacially crosslinked at least at the surface portion of the thin film, said membrane. (google.com)
  • There have been theoretical investigations of the analogous compound obtained by substituting amino groups (-NH2) for the hydroxyl (OH) groups to yield 1,2-diamino-3-cyclobutenedione, and of a compound consisting of two squarate rings bridged by (-NH-) bonds to form bis(3-cyclobutene-1,2-dione)piperazine. (wikipedia.org)
  • hydroxyl
  • The two components display acid-base interactions between the carbonyl groups of vinyl acetate and hydroxyl groups of TPR, complexes are formed between phenolic rings of TPR and hydroxyl groups on the surface of aluminium substrates, and interactions between carbonyl groups and silanol groups on surfaces of glass substrates are formed. (wikipedia.org)
  • Roundworm
  • Mebendazole is a highly effective, broad-spectrum antihelmintic indicated for the treatment of nematode infestations, including roundworm, hookworm, whipworm, threadworm, pinworm, and the intestinal form of trichinosis prior to its spread into the tissues beyond the digestive tract. (wikipedia.org)
  • Zealand
  • A ban was intended to come into effect in New Zealand on December 18, 2007, but the law change did not go through until the following year, and the sale of BZP and the other listed piperazines became illegal in New Zealand as of 1 April 2008. (wikipedia.org)
  • complexes
  • The results obtained from DFT calculations not only gave a good support to the experimental results and verified the experimentally demonstrated Ni-atom transfer mechanism from Ni=E (E = CH2, NH, PH) activating complex to ethylene to form three-membered ring products but also validated the application of late transition metal complexes in respective process. (unt.edu)
  • Only three of Good's buffers do not form noticeable complexes with any metals: MES, MOPS and PIPES. (wikipedia.org)
  • orally
  • The drug, in the form of a pill taken orally, was launched by Delalande in 1976 under the tradename Vasodistal, for treatment of heart failure, balance disorders, cerebrovascular disease, and vascular complications of diabetes. (wikipedia.org)
  • An orally disintegrating form, marketed as Staxyn and Levitra Soft, has been gaining approvals in countries such as the United States and Canada. (wikipedia.org)
  • pill
  • In 2007 piperazine based party-pill formulations started to become widely available nationwide which has caused concern with local authorities such as Health Canada and subsequently BZP has gained much media attention in 2008. (wikipedia.org)
  • Vardenafil is also available under the name Staxyn as a tablet which dissolves on the tongue rather than being swallowed in the form of a pill. (wikipedia.org)
  • occurs
  • A third and final moulting occurs to give the mature form of A. caninum which then feeds on mucosa and blood of the small intestine wall. (wikipedia.org)
  • donor
  • The pyrazolopyrimidinone of sildenafil mimics that of the guanine in cGMP and has the same H-bond donor and acceptor features, forming a bidendrate H-bond with Q817. (wikipedia.org)
  • Product
  • Piperazine is formed as a co-product in the ammoniation of 1,2-dichloroethane or ethanolamine. (wikipedia.org)
  • The piperazine is separated from the product stream, which contains ethylenediamine, diethylenetriamine, and other related linear and cyclic chemicals of this type. (wikipedia.org)
  • In the general reaction mechanism, 1,2-bis(trimethylsilyloxy)cyclobutene is reacted with the intermediate to form the second product in 85% yield. (wikipedia.org)
  • The final step involves reacting this product with BH3 in THF, then reacting the product with piperazine in MeOH at reflux. (wikipedia.org)
  • base
  • The hydrochloride salt is a white solid while the base form is a slightly yellowish-green liquid. (wikipedia.org)
  • materials
  • The in vivo oxidation of lipids and lipid-containing molecules has been discovered to be initiated by the concurrent reaction of such lipid materials with reducing sugars such as glucose, advanced glycosylation endproducts such as AGE-peptides, or a compound which forms advanced glycosylation endproducts, to form materials or particles known as AGE-lipids. (freepatentsonline.com)
  • Piperazines are also used in the manufacture of plastics, resins, pesticides, brake fluid and other industrial materials. (wikipedia.org)
  • The raw materials can be purchased from various chemical supply agencies and formed into tablets or capsules using relatively cheap production techniques. (wikipedia.org)
  • chemical
  • Piperazines were originally named because of their chemical similarity with piperidine, part of the structure of piperine in the black pepper plant (Piper nigrum). (wikipedia.org)
  • originally
  • It was originally developed in its 3H radiolabelled form for the purpose of mapping the distribution of dopaminergic neurons in the brain by selective labelling of dopamine transporter proteins. (wikipedia.org)
  • relatively
  • even a relatively weak nonpolar-nonpolar surface interaction can form a fairly strong bond prone primarily to a cohesive failure. (wikipedia.org)
  • hydrochloride
  • The end result is the basic form of cetirizine, which is then converted to a hydrochloride version by adding 2HCl. (ehow.co.uk)
  • although
  • Although Piperazine has a high degree of safety, an occasional animal may show nausea, vomiting or muscular tremors. (drugs.com)
  • high
  • The formed char layer with high quality effectively prevented the heat transmission and diffusion, limited the production of combustible gases, and inhibited the emission of smoke, leading to the reduction of heat and smoke release. (springer.com)
  • interactions
  • Weak bonding interactions and luminescent transitions were explained by calculation of Hg dimers, excimers and exciplexes formed with noble gases. (unt.edu)
  • pocket
  • describe the Q pocket as subdivided into 3 parts:A saddle formed by the conserved glutamine (Q817 in PDE5A, Q443 in PDE4B and Q369 in PDE4D) and the P clamp (a hydrophopic clamp at the narrow side of the active sites pocket, formed of invariant purine-selective glutamine and a pair of conserved residues). (wikipedia.org)
  • ecstasy
  • The psychedelic experience is often compared to non-ordinary forms of consciousness such as trance, meditation, yoga, religious ecstasy, dreaming and even near-death experiences. (wikipedia.org)
  • 2-Chloro-Ephenidine 2-MeO-Ephenidine Diphenidine Ephenidine, NEDPA, EPE Fluorolintane Methoxphenidine, 2-MeO-Diphenidine, MXP N-Methylephenidine, "Ephenidine-2" Dizocilpine, MK-801 Glaucine PD-137889 (P-89) Piperazine containing designer drugs have effects similar to MDMA (ecstasy). (wikipedia.org)
  • amino
  • There have been theoretical investigations of the analogous compound obtained by substituting amino groups (-NH2) for the hydroxyl (OH) groups to yield 1,2-diamino-3-cyclobutenedione, and of a compound consisting of two squarate rings bridged by (-NH-) bonds to form bis(3-cyclobutene-1,2-dione)piperazine. (wikipedia.org)
  • A hydrophobic pocket is formed by amino acid residues Ile-293, Leu-298, Leu-354 and Val-379 around the phenyl ring adjacent to the piperazinyl-methyl group of imatinib. (wikipedia.org)
  • atoms
  • 2,5-Diketopiperazine, also known as piperazine-2,5-dione and as the cyclodipeptide cyclo(Gly-Gly), is an organic compound and the smallest cyclic dipeptide that consists of a six-membered ring containing two amide linkages where the two nitrogen atoms and the two carbonyls are at opposite positions in the ring. (wikipedia.org)
  • Squaric acid, also called quadratic acid because its four carbon atoms approximately form a square, is an organic compound with chemical formula C4H2O4. (wikipedia.org)
  • often
  • Other Biologically active 2,5-Diketopiperazine Natural Products Bicyclomycin Gliotoxin Phenylahistin Roquefortine C 2,5-Diketopiperazines are often formed during chemical and thermal processing of food and beverages as the degradation products of polypeptides. (wikipedia.org)
  • Drug
  • Drug forms contain the racemic dihydrochloride. (wikipedia.org)
  • The drug, in the form of a pill taken orally, was launched by Delalande in 1976 under the tradename Vasodistal, for treatment of heart failure, balance disorders, cerebrovascular disease, and vascular complications of diabetes. (wikipedia.org)
  • natural
  • Here's a great Nature paper from a three lab collaboration (Lixin Zhang lab at Carnegie Mellon University, Pinghua Liu lab at Boston University, and Yan Jessie Zhang lab at UT Austin) that characterized the enzyme that forms the endoperoxide-containing natural product, verruculogen. (wordpress.com)
  • Controlled Substances Act (US) Misuse of Drugs Act 1971 (UK) Each Class A precursor includes synthetic and natural forms. (wikipedia.org)
  • iron
  • What is interesting about this enzyme is that it forms a "Compound I" species (iron oxo complex), which in turn forms a tyrosine radical within the enzyme, and this tyrosine radical is what abstracts the C-H hydrogen in the starting material, fumitremorgin B. The resulting allylic radical comes together with a molecule of oxygen that in turn cyclizes to form an endoperoxide-containing radical intermediate. (wordpress.com)
  • The process of the iron-oxo intermediate abstracting a hydrogen atom from tyrosine reminds me of the way cyclooxygenase enzymes (COX1 and COX2 enzymes) work to form the endoperoxide, prostaglandin H2, from arachidonic acid. (wordpress.com)