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Tapso Sodium CAS: 105140-25-8 Tus nqi tsim khoom
3-[N-Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid,Nws kuvtus neeg sawv cev zwitterionic buffering hauv daim ntawv ntawm cov ntsev sodium. Nws feem ntau siv rau hauv kev sim biochemical thiab molecular biology rau kev tswj hwm pH ruaj khov hauv cov tshuaj.It Nws yaj tau zoo heev hauv dej thiab muaj pKa ze rau physiological pH, ua rau nws haum rau ntau yam kev siv xws li protein purification, enzyme assays, cell culture, thiab electrophoresis. Nws cov qauv tshuaj lom neeg tshwj xeeb thiab kev sib raug zoo nrog cov kab ke hauv lub cev ua rau nws yog ib qho tseem ceeb hauv ntau yam kev cai hauv chav kuaj mob.
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4-Nitrophenyl phosphate di(tris) ntsev CAS:68189-42-4
4-Nitrophenyl phosphate di(tris) ntsev yog ib yam tshuaj siv hauv kev tshawb fawb thiab kev kuaj mob biochemical. Nws feem ntau siv ua lub substrate rau alkaline phosphatase enzyme assays. Cov ntsev no, thaum hydrolyzed los ntawm alkaline phosphatase, tsim cov khoom daj uas tuaj yeem ntsuas tau yooj yim spectrophotometrically. Cov tshuaj tiv thaiv no siv dav hauv ntau yam kev siv, suav nrog enzyme-linked immunosorbent assays (ELISAs) thiab phosphatase kev ua haujlwm nrhiav. Qhov xim daj yog ncaj qha proportional rau enzyme kev ua haujlwm, tso cai rau kev ntsuas qhov tseeb ntawm alkaline phosphatase theem hauv cov qauv biological. 4-Nitrophenyl phosphate di(tris) ntsev yog ruaj khov, yaj hauv dej, thiab rhiab heev, ua rau nws yog qhov kev xaiv nrov rau enzyme assays hauv kev tshawb fawb biological thiab kev kho mob.
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Nitrotetrazolium xiav chloride CAS: 298-83-9
Nitortrazolium xiav chloride, tseem hu ua NBT lossis NBT-Cl, yog ib qho tshuaj lom neeg uas feem ntau siv rau hauv kev kuaj mob biological thiab biochemical. Nws yog ib qho hmoov daj daj crystalline uas yaj tau hauv dej.
NBT feem ntau siv ua ib qho cim qhia kom paub txog qhov muaj cov superoxide radicals lossis cov enzymes uas tsim lawv. Nws hloov xim thaum raug txo los ntawm cov superoxide radicals, hloov los ntawm daj mus rau xiav formazan precipitate. Cov tshuaj tiv thaiv no feem ntau siv rau hauv kev sim los kawm txog kev ntxhov siab oxidative, kev ua pa ntawm tes, thiab kev ua haujlwm ntawm enzyme.
NBT feem ntau siv rau hauv ntau txoj kev, xws li kev txo qis nitroblue tetrazolium, los pom cov superoxide tsim tawm hauv cov hlwb thiab cov nqaij. Nws kuj tau siv rau hauv immunohistochemistry thiab histochemistry los ntes thiab nrhiav lwm cov enzymes thiab cov khoom hauv hlwb.
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NSP-AS CAS: 211106-69-3 Tus nqi tsim khoom
Cov tshuaj 3-[9-((((3-(carboxypropyl)[4-Methxylphenyl]sulfonyl)aMine)carboxyl]-10-acridiniuMyl)-1-propanesulfonate sab hauv ntsev yog ib qho molecule complex uas muaj ib qho acridinium moiety txuas nrog ib qho propanesulfonate sab hauv ntsev. Nws muaj ib pawg carboxypropyl, ib pawg 4-Methxylphenylsulfonyl, thiab ib pawg amine. Cov tshuaj no yuav raug tsim los rau cov ntawv thov tshwj xeeb hauv cov cheeb tsam xws li chemistry, pharmaceuticals, lossis kev tshawb fawb.
Tsis tas li ntawd xwb, NAC tau qhia txog kev cog lus hauv kev txhawb nqa kev noj qab haus huv ntawm lub siab los ntawm kev pab tshem tawm cov tshuaj lom, xws li acetaminophen, uas yog ib yam tshuaj uas siv ntau rau kev mob. Nws kuj tseem yuav muaj cov txiaj ntsig tiv thaiv kev puas tsuaj ntawm lub siab los ntawm kev haus cawv.
Ntxiv rau nws cov khoom siv antioxidant thiab kev txhawb nqa kev ua pa, NAC tau raug tshawb nrhiav txog nws cov txiaj ntsig zoo rau kev noj qab haus huv ntawm lub hlwb. Qee qhov kev tshawb fawb qhia tias nws yuav muaj qhov cuam tshuam zoo rau kev mob hlwb, xws li kev nyuaj siab thiab kev puas siab puas ntsws obsessive-compulsive (OCD).
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L-Leucine p-nitroanilide hydrochloride CAS: 16010-98-3
L-Leucine p-nitroanilide hydrochloride yog ib qho tshuaj lom neeg uas yog ib feem ntawm pawg p-nitroanilide derivatives. Nws yog ib qho hmoov dawb mus rau dawb-dawb crystalline uas feem ntau siv rau hauv kev tshawb fawb biochemical thiab kev ntsuam xyuas enzyme.
L-Leucine p-nitroanilide hydrochloride feem ntau siv ua ib qho substrate los ntsuas qhov kev ua haujlwm ntawm cov enzymes xws li proteases thiab peptidases. Thaum cov enzymes no txiav L-Leucine p-nitroanilide hydrochloride, nws tso tawm p-nitroaniline, uas tuaj yeem kuaj pom spectrophotometrically. Tus nqi ntawm kev hloov xim yog ncaj qha proportional rau qhov kev ua haujlwm enzymatic, uas tso cai rau kev ntsuas ntawm qhov kev ua haujlwm enzyme hauv cov qauv biological.
Cov tshuaj no yaj tau hauv dej thiab yooj yim yaj rau hauv cov tshuaj buffer uas tsim nyog rau kev siv hauv kev ntsuam xyuas enzymatic. Nws yog ib qho tseem ceeb kom khaws cia L-Leucine p-nitroanilide hydrochloride rau hauv qhov chaw txias thiab qhuav kom tswj tau nws qhov ruaj khov.
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Guanidine Thiocyanate Sulfate CAS: 593-84-0
Guanidine thiocyanate sulfate yog ib qho tshuaj sib xyaw ua los ntawm guanidine, thiocyanate, thiab sulfate ions. Nws feem ntau siv rau hauv kev tshawb fawb txog molecular biology thiab biochemistry ua tus neeg sawv cev chaotropic.
Guanidine thiocyanate sulfate feem ntau siv rau hauv cov txheej txheem cais DNA thiab RNA los cuam tshuam cov cellular membranes thiab denature protein, uas ua rau muaj kev rho tawm zoo ntawm nucleic acids. Nws pab hauv kev yaj ntawm DNA thiab RNA, ua rau lawv cais thiab ntxuav los ntawm ntau yam qauv tshuaj lom neeg.
Vim nws cov khoom chaotropic, guanidine thiocyanate sulfate pab rhuav tshem hydrogen bonding thiab lwm yam kev sib cuam tshuam tsis yog-covalent, pab txhawb kev sib cais ntawm nucleic acids los ntawm cov protein, lipids, thiab lwm yam khoom ntawm tes. Nws kuj pab tiv thaiv RNase kev ua haujlwm, xyuas kom meej tias muaj kev ncaj ncees thiab kev ntshiab ntawm cov nucleic acids uas tau rho tawm..
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BCIP-Toluidine)5-Bromo-4-chloro-3-indolylphosphate-p-toluidine ntsev CAS: 6578-06-9
BCIP-Toluidine, tseem hu ua 5-Bromo-4-chloro-3-indolylphosphate-p-toluidine ntsev, yog ib qho tshuaj lom neeg uas feem ntau siv rau hauv kev tshawb fawb txog molecular biology thiab biochemistry. Nws feem ntau yog siv ua lub substrate hauv enzyme-linked immunosorbent assays (ELISAs) lossis immunohistochemical staining techniques los ntes alkaline phosphatase kev ua haujlwm.
Thaum BCIP-Toluidine raug alkaline phosphatase txiav, nws dhau los ua qhov kev hloov pauv xim, tsim cov xim xiav-ntshav. Qhov kev tshuaj tiv thaiv no tso cai rau kev pom thiab kev ntsuas ntawm alkaline phosphatase kev ua ub no hauv cov qauv. Qhov muaj zog ntawm cov xim tuaj yeem ntsuas spectrophotometrically thiab yog ncaj qha proportional rau qhov kev ua ub no ntawm enzyme.
Kev siv BCIP-Toluidine ua ib qho substrate yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas muaj DNA lossis RNA labeling, xws li in situ hybridization (ISH) lossis Southern thiab Northern blotting. Nws muab ib txoj kev txhim khu kev qha thiab rhiab heev rau kev ntes qhov muaj cov nucleic acids hauv cov qauv.
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3-Aminophthalhydrazide CAS: 521-31-3
3-Aminophthalhydrazide yog ib qho tshuaj sib xyaw nrog cov mis molecular C8H8N2O. Nws yog hu ua aminohydrazide derivative ntawm phthalic acid. Cov tshuaj no muaj cov phthalic acid backbone nrog ob lub hydrogen atoms hloov los ntawm ib pawg amino thiab ib pawg hydrazine.
3-Aminophthalhydrazide muaj ntau yam kev siv hauv kev lag luam organic chemistry thiab tshuaj. Nws tuaj yeem siv ua cov khoom siv pib hauv kev tsim ntau yam tshuaj thiab cov xim pleev xim. Tsis tas li ntawd, nws feem ntau siv rau hauv kev npaj Schiff bases, uas yog cov khoom siv tseem ceeb hauv kev tsim cov organic.
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4-Aminoantipyrine CAS: 83-07-8
4-Aminoantipyrine, tseem hu ua aminoantipyrine lossis aminopyrine, yog ib qho tshuaj organic sib xyaw ua ke. Nws feem ntau siv ua cov tshuaj reagent hauv kev tshuaj ntsuam xyuas tshuaj thiab kev lag luam tshuaj. Nws cov qauv tshuaj muaj ib lub nplhaib aromatic nrog ib pawg amino (NH2) thiab ib pawg pyrazolone, ua rau nws yog ib qho tshuaj sib xyaw ua ke rau ntau yam kev siv.
Hauv kev tshuaj xyuas tshuaj, 4-Aminoantipyrine yog siv dav ua cov tshuaj chromogenic hauv kev ntsuas xim. Nws cuam tshuam nrog qee yam tshuaj, xws li phenols thiab peroxides, los tsim cov xim sib xyaw uas tuaj yeem ntsuas spectrophotometrically. Cov yam ntxwv no ua rau nws muaj txiaj ntsig zoo hauv ntau yam kev ntsuas, suav nrog kev txiav txim siab ntawm cov enzymes xws li peroxidase, glucose, thiab amylase.
Hauv kev lag luam tshuaj, 4-Aminoantipyrine tau siv yav dhau los ua tshuaj analgesic thiab antipyretic. .
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TAPS-NA CAS:91000-53-2 Tus nqi tsim khoom
N-[Tris(hydroxymethyl)methyl]-3-aminopropanesulfonic acid sodium ntsev, tseem hu ua TAPS-Na, yog ib qho tshuaj lom neeg uas feem ntau siv ua tus neeg sawv cev rau ntau yam kev siv tshuaj lom neeg thiab tshuaj lom neeg. Nws yog ib qho zwitterionic compound, txhais tau tias nws muaj ob qho tib si zoo thiab tsis zoo, uas pab tswj kom muaj pH ruaj khov hauv cov tshuaj.
TAPS-Na muaj pH ntau ntawm kwv yees li 7.7 txog 9.1, ua rau nws haum rau cov ntawv thov uas xav tau ib puag ncig pH alkaline me ntsis. Nws feem ntau siv rau hauv kev tshawb fawb txog protein thiab enzyme, nrog rau hauv cov txheej txheem molecular biology xws li gel electrophoresis thiab DNA sequencing.
Ua ib qho ntsev sodium, TAPS-Na yaj tau zoo heev hauv dej, uas ua rau yooj yim rau kev npaj cov tshuaj buffered. Nws paub txog nws qhov kev lom tsawg thiab kev cuam tshuam tsawg kawg nkaus rau cov tshuaj lom neeg, ua rau nws yog qhov kev xaiv zoo rau ntau qhov kev sim.
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5,5-Dithiobis (2-nitrobenzoic acid) CAS: 69-78-3
5,5-Dithiobis (2-nitrobenzoic acid), tseem hu ua DTNB lossis Ellman's reagent, yog ib hom tshuaj lom neeg uas feem ntau siv rau hauv kev tshawb fawb txog biochemical thiab tshuaj. Nws yog ib hom hmoov daj, crystalline uas yaj tau zoo heev hauv dej thiab cov kuab tshuaj organic.
DTNB feem ntau yog siv los ntsuas qhov concentration ntawm sulfhydryl (-SH) pawg hauv cov protein thiab peptides. Cov tshuaj no reacts nrog thiols, ua rau muaj kev sib xyaw disulfide thiab tso tawm 2-nitro-5-thiobenzoate, uas muaj xim daj uas tuaj yeem ntsuas spectrophotometrically. Los ntawm kev ntsuas qhov hnyav ntawm cov xim daj, nws muaj peev xwm kwv yees qhov concentration ntawm thiols hauv ib qho qauv. Cov txheej txheem no feem ntau yog siv los kawm txog kev sib cuam tshuam ntawm cov protein-protein, protein folding, thiab enzymatic reactions uas cuam tshuam nrog thiol pawg.
Ntxiv rau qhov kev ntsuas thiol, DTNB tau siv rau hauv lwm yam kev siv, xws li kev ntsuam xyuas lub xeev redox ntawm cov hlwb, kawm txog kev ruaj khov ntawm cov hlau-sulfur sib xyaw, thiab ntsuas kev ua haujlwm ntawm ntau yam enzymes.
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PHENOLPHTHALEIN MONOPHOSPHATE BIS (CYCLOHEXYLAMMONIUM) NTSEV CAS: 14815-59-9
Phenolphthalein monophosphate dicyclohexylammonium ntsev yog ib qho tshuaj lom neeg uas tau los ntawm phenolphthalein, ib qho pH qhia feem ntau siv hauv chaw kuaj mob. Daim ntawv ntsev dicyclohexylammonium ntawm phenolphthalein monophosphate feem ntau siv ua cov tshuaj reagent hauv kev tshawb fawb biochemical thiab molecular biology. Nws feem ntau yog siv rau hauv kev sim lossis kev ntsuam xyuas los ntes thiab ntsuas qhov muaj qee cov enzymes, suav nrog cov uas koom nrog ATP (adenosine triphosphate) hydrolysis lossis phosphatase cov haujlwm. Nws cov khoom tshwj xeeb ua rau nws yog ib qho cuab yeej muaj txiaj ntsig hauv kev tshawb nrhiav txog kev tshawb fawb txog enzyme kinetics thiab cov txheej txheem cellular..
