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Heppso sodium CAS: 89648-37-3 Mtengo wa Wopanga
Mchere wa sodium wa N-[2-Hydroxyethyl]piperazine-N'-[2-hydroxypropanesulfonic acid] ndi mankhwala omwe ali ndi formula ya C8H19N2NaO4S. Ndi mchere wa sodium womwe umachokera ku piperazine, womwe uli ndi magulu ogwira ntchito a hydroxyethyl ndi hydroxypropanesulfonic acid. Umagwiritsidwa ntchito kwambiri mumakampani opanga mankhwala ngati chotetezera komanso chokhazikika mu mankhwala. Mcherewu umathandiza kusunga pH ndi kukhazikika kwa mankhwala.
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P-NITROPHENYL BETA-D-LACTOPYRANOSIDE CAS:4419-94-7
P-Nitrophenyl beta-D-lactopyranoside, yomwe imadziwikanso kuti PNPG, ndi mankhwala omwe amagwiritsidwa ntchito nthawi zambiri poyesa ma enzyme kuti ayesere ntchito ya beta-galactosidase, enzyme yomwe imakhudzidwa ndi kagayidwe ka chakudya m'thupi. PNPG ndi chinthu chopangidwa chomwe chingadulidwe ndi beta-galactosidase, zomwe zimapangitsa kuti chinthucho chitulutsidwe chachikasu. Kukula kwa hydrolysis ya substrate kumatha kuwerengedwa ndi spectrophotometric poyesa kuyamwa kwa chinthucho pamlingo winawake. Izi zimathandiza ofufuza kuwunika ntchito ndi kinetics ya beta-galactosidase m'malo osiyanasiyana, monga kuphunzira ntchito ya enzyme, kufufuza zoletsa za enzyme kapena zoyambitsa, kapena kuwunika zotsatira za kusintha kwa masinthidwe pa ntchito ya enzyme.
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popso sesquisodium CAS: 108321-08-0
Mchere wa Piperazine-N,N'-bis(2-hydroxypropanesulfonic acid) sesquisodium, womwe umadziwikanso kuti PIPES sesquisodium salt, ndi mankhwala omwe amagwiritsidwa ntchito ngati chotetezera m'magwiritsidwe ntchito osiyanasiyana asayansi ndi mafakitale. Umathandiza kusunga pH yokhazikika mu mayankho, makamaka mu pH ya thupi. Mchere wa PIPES sesquisodium umagwiritsidwa ntchito kwambiri mu cell culture media, protein biochemistry, electrophoresis, ma molecular biology techniques, ndi machitidwe operekera mankhwala. Umagwira ntchito ngati wowongolera pH komanso wowonjezera ntchito ya enzyme ndi kukhazikika, zomwe zimapangitsa kuti ukhale wofunika kwambiri mu kafukufuku wosiyanasiyana komanso njira zamafakitale.
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ACES CAS: 7365-82-4 Mtengo wa Wopanga
N-(2-Acetamido)-2-aminoethanesulfonic acid, yomwe imadziwikanso kuti ACES, ndi mankhwala otetezera omwe amagwiritsidwa ntchito kwambiri mu kafukufuku wa sayansi. Amathandiza kusunga pH yokhazikika mu mayankho ndipo amasungunuka kwambiri m'madzi. ACES ili ndi poizoni wochepa komanso imasokoneza pang'ono njira zama biochemical, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana. Nthawi zambiri imagwiritsidwa ntchito ngati chotetezera mu maphunziro okhazikika kwa mapuloteni ndi mayeso a enzyme, komwe imasunga mikhalidwe yabwino kwambiri yopangira mapuloteni ndi ntchito ya enzyme.
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Phenylgalactoside CAS:2818-58-8
Phenylgalactoside, yomwe imadziwikanso kuti p-nitrophenyl β-D-galactopyranoside (pNPG), ndi chinthu chopangidwa chomwe chimagwiritsidwa ntchito nthawi zambiri mu kafukufuku wa biochemical ndi molecular biology. Chimagwiritsidwa ntchito kwambiri pozindikira ndikuyesa ntchito ya enzyme β-galactosidase.
Phenylgalactoside ikaphikidwa ndi β-galactosidase, imatulutsa p-nitrophenol, yomwe ndi mankhwala achikasu. Kutuluka kwa p-nitrophenol kumatha kuyezedwa mochuluka pogwiritsa ntchito spectrophotometer, chifukwa kuyamwa kwa p-nitrophenol kumatha kupezeka pa kutalika kwa 405 nm.
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DIPSO CAS: 68399-80-4 Mtengo wa Wopanga
DIPSO imayimira “Diisopropyl azodicarboxylate,” yomwe ndi reagent yomwe imagwiritsidwa ntchito kwambiri mu organic chemistry. Imagwiritsidwa ntchito makamaka mu Mitsunobu reaction, yomwe ndi njira yosinthira ma alcohols kukhala magulu osiyanasiyana ogwira ntchito monga ma esters, ethers, kapena amines. DIPSO imagwira ntchito ngati gwero la intermediate yogwira ntchito kwambiri yotchedwa azodicarboxylate, yomwe imathandizira kusinthaku.
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4-Nitrophenyl-beta-D-glucopyranoside CAS:2492-87-7
4-Nitrophenyl-beta-D-glucopyranoside ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri poyesa za biochemical kuti chiwone momwe ma enzyme monga β-glucuronidase amagwirira ntchito. Chomerachi chimasungunuka ndi hydrolyzed ndi enzyme, zomwe zimapangitsa kuti 4-nitrophenol itulutsidwe, yomwe imatha kuyezedwa pogwiritsa ntchito spectrophotometry. Kugwiritsa ntchito kwake kumathandiza ofufuza kuphunzira mbali zosiyanasiyana za kagayidwe ka mankhwala, poizoni, komanso matenda okhudzana ndi glucuronidation reactions.
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Tris maleate CAS: 72200-76-1
Tris maleate ndi mankhwala omwe amagwira ntchito ngati chosungira pH komanso chosinthira pH m'mafakitale osiyanasiyana. Amagwiritsidwa ntchito kusunga pH yokhazikika komanso kukana kusintha komwe kumachitika chifukwa cha kuwonjezera ma acid kapena ma base. Tris maleate imagwiritsidwa ntchito kwambiri mu kafukufuku wa biochemical, kuyeretsa mapuloteni, njira zamafakitale, komanso chemistry yowunikira. Ndi yothandiza kwambiri pakusunga pH yotsika ndipo imadziwika kuti imagwira ntchito zosiyanasiyana posunga pH yabwino kwambiri.
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MOBS CAS:115724-21-5 Mtengo wa Wopanga
4-morpholin-4-ylbutane-1-sulfonic acid, yomwe imadziwikanso kuti MOBS, ndi mankhwala opangidwa ndi organic omwe amagwiritsidwa ntchito ngati chotetezera mu kafukufuku wa zamoyo ndi zamankhwala. Ndi okhazikika ndipo amatha kusunga pH yokhazikika mu mtundu wa neutral mpaka pang'ono wa alkaline. MOBS imagwiritsidwa ntchito kwambiri pakukula kwa maselo, kuyesa ma enzyme, njira za biology ya mamolekyulu, ndi electrophoresis. Imagwirizana ndi ma reagents osiyanasiyana ndipo imadziwika chifukwa cha kukhazikika kwake komanso kukana kusintha kwa kutentha ndi pH.
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1,2,3,4,6-penta-O-acetyl-alpha-D-galactopyranose CAS:4163-59-1
1,2,3,4,6-penta-O-acetyl-alpha-D-galactopyranose ndi mankhwala omwe ali m'gulu la chakudya. Ndi ochokera ku alpha-D-galactopyranose, shuga wobadwa mwachibadwa. Mankhwalawa ali ndi magulu asanu a acetyl omwe amamangiriridwa ku magulu enaake a hydroxyl pa molekyulu ya shuga. Amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana komanso m'mafakitale, kuphatikizapo ngati chinthu choyambira kupanga mankhwala ena. Kapangidwe kake ka acetylated kamawonjezera kukhazikika kwake ndi kuchitapo kanthu, zomwe zimapangitsa kuti ikhale chinthu chothandiza pakupanga mankhwala achilengedwe.
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POPSO CAS: 68189-43-5 Mtengo wa Wopanga
POPSO, chidule cha Piperazine-N,N'-bis(2-hydroxypropanesulfonic acid) sesquisodium salt, ndi mankhwala otetezera omwe amagwiritsidwa ntchito kwambiri mu kafukufuku wa zamoyo ndi zamankhwala. Amathandiza kusunga pH yokhazikika mu mayankho, makamaka mkati mwa pH ya thupi. Mchere wa sesquisodium wa PIPES umagwiritsidwa ntchito mu chitukuko cha maselo, biochemistry ya mapuloteni, electrophoresis, njira za biology ya molecular, njira zoperekera mankhwala, ndi zina zambiri. Kutha kwake kulamulira pH kumapangitsa kuti ikhale chida chofunikira kwambiri mu kafukufuku wosiyanasiyana ndi ntchito zamafakitale.
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BES CAS: 10191-18-1 Mtengo wa Wopanga
N,N-Bis(hydroxyethyl)-2-aminoethanesulfonic acid, yomwe imadziwikanso kuti BES kapena N,N-Bis(2-hydroxyethyl)aminoethanesulfonic acid, ndi mankhwala omwe amagwiritsidwa ntchito kwambiri ngati chotetezera m'magwiritsidwe osiyanasiyana asayansi ndi mafakitale.
BES ndi mankhwala a zwitterionic, zomwe zikutanthauza kuti ali ndi mphamvu zabwino komanso zoyipa mkati mwa kapangidwe kake. Kapangidwe kameneka kamathandiza kuti isunge pH yokhazikika bwino mu mayankho.
BES ili ndi pKa pafupifupi 7.4, zomwe zimapangitsa kuti ikhale yothandiza kwambiri pochepetsa kuchuluka kwa pH m'thupi. Nthawi zambiri imagwiritsidwa ntchito poyesa zamoyo ndi zamankhwala, monga kuyeretsa mapuloteni, zochita za ma enzyme, ndi chikhalidwe cha maselo, komwe kusunga pH inayake ndikofunikira kwambiri.
Kuphatikiza apo, BES imagwiritsidwa ntchito kwambiri mu njira zamagetsi, chifukwa imathandiza kusunga pH yofunikira pakulekanitsa ndi kusanthula ma biomolecules omwe ali ndi mphamvu, monga mapuloteni ndi ma nucleic acid.
