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Ninhydrin hydrate CAS: 485-47-2 Tus nqi tsim khoom
Ninhydrin hydrate yog ib hom tshuaj lom neeg uas siv ntau hauv kev tshuaj xyuas kev ua txhaum cai thiab cov organic chemistry. Nws yog ib qho hmoov crystalline tsis muaj xim lossis daj daj uas yaj tau hauv dej thiab cov kuab tshuaj organic.
Ninhydrin hydrate paub txog nws lub peev xwm los ua tshuaj nrog cov amino acids thiab cov amines thawj, ua rau pom xim ntshav-xiav. Cov tshuaj no feem ntau siv rau hauv kev tshuaj xyuas ntiv tes kom pom thiab txhim kho qhov pom ntawm cov ntiv tes latent ntawm cov qhov chaw porous. Cov kua ninhydrin feem ntau yog txau rau ntawm qhov chaw, thiab cov ntiv tes tsim tawm raws sijhawm thaum ninhydrin ua tshuaj nrog cov amino acids uas muaj nyob rau hauv cov ntiv tes seem.
Hauv kev tshuaj lom neeg organic, ninhydrin hydrate yog siv los ua cov tshuaj reagent rau kev nrhiav thiab tshuaj xyuas cov amino acids, peptides, thiab cov protein. Nws tuaj yeem siv los txiav txim siab qhov muaj thiab ntsuas qhov ntau ntawm cov amino acids hauv cov qauv. Qhov tshuaj tiv thaiv nrog ninhydrin ua rau muaj cov khoom muaj xim, uas tuaj yeem ntsuas spectrophotometrically los kwv yees qhov concentration ntawm analyte.
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D-Luciferin CAS: 2591-17-5 Tus nqi tsim khoom
D-Luciferin yog ib qho tshuaj me me uas ua rau lub teeb ci ntsa iab feem ntau pom muaj nyob rau hauv cov tsiaj txhu uas muaj teeb ci xws li cov kab ntsaum, cov kab mob me me, thiab cov tsiaj txhu hauv dej hiav txwv. Nws yog qhov tseem ceeb ntawm luciferase reaction, ib qho txheej txheem biochemical uas tsim lub teeb.
D-Luciferin feem ntau siv ua lub substrate hauv bioluminescence assays thiab imaging techniques, qhov twg nws cov tshuaj tiv thaiv nrog luciferase tsim lub teeb uas tuaj yeem ntes tau thiab ntsuas tau. Qhov no ua rau nws yog ib qho cuab yeej muaj txiaj ntsig hauv ntau qhov chaw tshawb fawb, suav nrog molecular biology, kev tshawb nrhiav tshuaj, thiab biomedical imaging.
Vim nws cov khoom siv pom kev tshwj xeeb, D-Luciferin tau siv dav hauv kev tshawb fawb txog kev qhia txog cov noob caj noob ces, kev sib cuam tshuam ntawm cov protein thiab cov protein, thiab kev sib txuas lus ntawm tes. Nws muab txoj hauv kev tsis muaj kev cuam tshuam thiab rhiab heev los tshawb nrhiav cov txheej txheem ntawm lub cev hauv lub sijhawm tiag tiag.
Tsis tas li ntawd xwb, cov D-Luciferin derivatives thiab analogs tau raug tsim tawm, uas tso cai rau ntau yam kev hloov kho thiab kev siv. Cov derivatives hloov kho no ua rau muaj ntau qhov wavelengths ntawm lub teeb ci, txhim kho kev ruaj khov, thiab txhim kho kev nkag mus rau hauv cov ntaub so ntswg.
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p-hydroxybenzoic acid, monosodium CAS: 114-63-6
p-Hydroxybenzoic acid, monosodium (tseem hu ua sodium 4-hydroxybenzoate) yog ib qho tshuaj lom neeg uas muaj cov mis molecular C7H5NaO3. Nws yog ib qho ntsev sodium uas tau los ntawm p-hydroxybenzoic acid, uas yog ib qho organic compound uas muaj nyob rau hauv cov nroj tsuag xws li txiv hmab txiv ntoo thiab zaub.
p-Hydroxybenzoic acid, monosodium yog siv rau hauv ntau yam lag luam rau nws cov khoom siv tua kab mob. Nws feem ntau siv ua cov tshuaj preservative hauv cov khoom noj, dej haus, tshuaj pleev ib ce, thiab cov khoom siv tu tus kheej kom tiv thaiv kev loj hlob ntawm cov kab mob, cov pwm, thiab cov poov xab. Nws pab ua kom cov khoom no ntev dua los ntawm kev tiv thaiv kev puas tsuaj thiab khaws cia lawv qhov zoo.
Hauv kev siv tshuaj, p-Hydroxybenzoic acid, monosodium yog siv ua ib qho khoom siv hauv cov tshuaj noj thiab cov tshuaj pleev. Nws cov khoom tua kab mob pab tswj kev ruaj khov thiab kev tsis muaj kab mob ntawm cov khoom no, ua kom lawv muaj kev nyab xeeb thiab ua haujlwm tau zoo.
Tsis tas li ntawd xwb, p-Hydroxybenzoic acid, monosodium muaj cov khoom antioxidant, uas ua rau nws muaj txiaj ntsig zoo rau kev tiv thaiv kev puas tsuaj oxidative hauv ntau yam khoom. Nws tuaj yeem pab tiv thaiv kev puas tsuaj ntawm cov khoom xyaw thiab ua kom ntev lub neej ntawm cov khoom..
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4-Nitrophenyl phosphate disodium ntsev hexahydrate CAS: 4264-83-9
4-Nitrophenyl phosphate disodium ntsev hexahydrate yog ib qho tshuaj lom neeg uas feem ntau siv ua lub substrate rau kev ntes cov haujlwm ntawm phosphatase enzymes. Nws zoo li dawb mus rau dawb hmoov thiab yaj tau zoo heev hauv dej. Thaum ua haujlwm los ntawm phosphatase enzymes, nws dhau los ua ib qho tshuaj tiv thaiv uas ua rau muaj xim daj, uas tuaj yeem ntsuas tau spectrophotometrically. Cov tshuaj no pom cov ntawv thov hauv ntau yam kev sim biochemical thiab cov khoom siv kuaj mob rau kev ntes thiab ntsuas cov haujlwm phosphatase hauv cov qauv..
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Methylphenazinium methosulfate CAS: 299-11-6
Methylphenazinium methosulfate (MPMS) yog ib qho tshuaj redox-active uas feem ntau siv ua tus nqa hluav taws xob hauv ntau yam kev tshawb fawb biochemical thiab biophysical. Nws yog ib qho ntsev uas muaj methylphenazinium cation (ib qho heterocyclic compound) thiab methosulfate anion.
MPMS feem ntau siv los ua lwm txoj hauv kev rau cov neeg nqa hluav taws xob ib txwm muaj, xws li ferricyanide lossis phenazine ethosulfate, vim nws ruaj khov thiab solubility siab hauv dej. Nws muaj cov khoom redox zoo, uas tso cai rau nws txais thiab hloov cov electrons thaum lub sijhawm enzymatic reactions.
Ib qho ntawm cov ntawv thov tseem ceeb ntawm MPMS yog nyob rau hauv kev ntsuam xyuas uas cuam tshuam nrog kev ntsuas ntawm kev hloov pauv hluav taws xob lossis kev ua haujlwm enzymatic. Nws feem ntau siv ua ke nrog lub kaw lus enzyme los saib xyuas kev hloov pauv ntawm cov hluav taws xob ntawm cov khoom sib txawv. Kev txo qis ntawm MPMS tuaj yeem pom spectrophotometrically, qhov twg nws qhov absorbance hloov pauv raws li cov txheej txheem hloov pauv hluav taws xob.
MPMS kuj tseem siv rau hauv kev tshawb fawb txog mitochondrial respiration thiab oxidative phosphorylation. Nws tuaj yeem ua haujlwm ua tus txais electron dag, uas tso cai rau cov kws tshawb fawb tshawb nrhiav kev ua haujlwm thiab kev tswj hwm ntawm cov txheej txheem no hauv ntau yam kab mob.
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4-Nitrophenyl-alpha-L-fucopyranoside CAS: 10231-84-2
4-Nitrophenyl-alpha-L-fucopyranoside yog ib yam tshuaj uas yog los ntawm tsev neeg glycosides. Nws muaj ib lub molecule qab zib fucose txuas nrog ib pawg 4-nitrophenyl. Cov tshuaj no feem ntau siv ua ib lub substrate hauv kev ntsuam xyuas enzymatic los kawm txog kev ua haujlwm ntawm fucosidases, uas yog cov enzymes koom nrog kev rhuav tshem cov molecules uas muaj fucose. Thaum ua haujlwm los ntawm ib lub enzyme fucosidase, 4-nitrophenyl-alpha-L-fucopyranoside raug txiav, ua rau muaj kev tso tawm ntawm 4-nitrophenol, uas tuaj yeem ntsuas tau ntau yam siv spectrophotometry. Lub substrate no muaj txiaj ntsig zoo hauv kev tshawb fawb txog kev ua haujlwm enzymatic, kev tshwj xeeb ntawm substrate, kev tshuaj ntsuam inhibitor, thiab kinetics ntawm fucosidase enzymes.
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N-Ethylmaleimide CAS: 128-53-0 Tus nqi tsim khoom
N-Ethylmaleimide (NEM) yog ib qho organic compound me me uas feem ntau siv rau hauv kev tshawb fawb biochemistry thiab molecular biology. Nws ua haujlwm ua ib qho inhibitor tshwj xeeb ntawm cov protein sulfhydryl (thiol) pawg los ntawm kev hloov pauv thiab thaiv lawv cov haujlwm tsis rov qab. NEM muaj kev cuam tshuam nrog cov pawg sulfhydryl, xws li cov uas pom hauv cov amino acid cysteine, thiab tuaj yeem cuam tshuam nrog ob qho tib si sulfhydryl pawg dawb thiab cov uas nyob hauv cov protein. Qhov no ua rau NEM yog ib qho cuab yeej pab tau rau kev kawm txog kev ua haujlwm ntawm cov protein, kev sib cuam tshuam ntawm cov protein-protein, thiab kev ua haujlwm ntawm enzyme. Nws cov khoom inhibitory tau siv rau ntau yam kev siv, suav nrog proteomics, enzymology, structural biology, thiab kev tshawb pom tshuaj.
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5-Sulfosalicylic acid dihydrate CAS: 5965-83-3
5-Sulfosalicylic acid dihydrate yog ib yam tshuaj uas feem ntau siv rau hauv cov chaw kuaj mob biochemical thiab tshuaj. Nws yog ib yam khoom dawb crystalline uas yaj tau zoo heev hauv dej. 5-Sulfosalicylic acid dihydrate yog ib qho derivative ntawm salicylic acid thiab muaj cov mis molecular ntawm C7H6O6S. Nws feem ntau siv ua reagent rau protein precipitation thiab tuaj yeem siv los ntsuas cov protein hauv cov qauv biological, xws li zis thiab serum. Tsis tas li ntawd, nws tuaj yeem siv rau hauv kev txiav txim siab ntawm ntau yam tshuaj, suav nrog nucleic acids, enzymes, hormones, thiab tshuaj. Daim ntawv dihydrate ntawm cov tshuaj qhia tias nws muaj ob lub molecule ntawm dej rau ib lub molecule ntawm cov kua qaub.
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Potassium iodide CAS: 7681-11-0
Potassium iodide (KI) yog ib qho inorganic compound uas muaj potassium cations (K+) thiab iodide anions (I-). Nws yog ib qho dawb, crystalline khoom uas yaj tau zoo heev hauv dej. Potassium iodide muaj ntau yam kev siv thiab kev siv vim nws cov khoom.
Ib qho ntawm cov kev siv tseem ceeb ntawm potassium iodide yog hauv kev kho mob. Nws feem ntau siv ua cov tshuaj ntxiv los kho thiab tiv thaiv cov mob uas cuam tshuam nrog iodine tsis txaus, xws li goiter, thyroid hormone tsis sib npaug, thiab qee hom mob qog noj ntshav thyroid. Nws kuj tseem siv tau ua kev kho mob thaum muaj xwm txheej ceev rau kev raug hluav taws xob, vim nws pab thaiv kev nqus ntawm radioactive iodine los ntawm cov qog thyroid.
Potassium iodide kuj muaj kev siv hauv chaw kuaj mob. Nws yog siv ua cov tshuaj reagent hauv kev tshuaj ntsuam xyuas chemistry los ntes qhov muaj qee yam ntsiab lus, xws li txhuas thiab mercury, los ntawm kev tsim cov dej daj uas tsis yaj. Tsis tas li ntawd, nws tuaj yeem siv ua qhov chaw ntawm iodide ions hauv ntau yam tshuaj lom neeg.
Hauv kev ua noj ua haus, qee zaum ntxiv cov potassium iodide rau hauv cov ntsev noj (ntsev iodized) ua ib txoj hauv kev los tiv thaiv kev tsis txaus iodine hauv cov pej xeem. Ntau tus neeg thoob ntiaj teb noj ntsev iodine ua ib qho khoom noj muaj iodine.
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8-Anilino-1-naphthalenesulfonic acid ammonium ntsev CAS: 28836-03-5
8-Anilino-1-naphthalenesulfonic acid ammonium ntsev yog ib qho tshuaj sib xyaw uas feem ntau siv ua xim fluorescent. Nws muaj cov qauv uas muaj ib pawg aniline txuas rau ib qho naphthalenesulfonic acid molecule nrog ib qho ammonium ntsev. Cov tshuaj no yaj tau hauv dej thiab muaj zog nqus thiab tso tawm hauv qhov pom kev.
Vim nws cov khoom fluorescent, 8-Anilino-1-naphthalenesulfonic acid ammonium ntsev feem ntau siv ua qhov ntsuas lossis qhov taw qhia hauv ntau yam kev tshawb fawb biochemical thiab biophysical. Nws tuaj yeem siv los ntes cov kev hloov pauv hauv pH, kev hloov pauv conformational hauv cov protein, kev sib cuam tshuam protein-ligand, thiab qhov muaj qee cov ions.
Thaum lub teeb ci ntsa iab zoo li lub teeb wavelength, cov tshuaj no yuav tso tawm lub teeb xiav ci ntsa iab, ua rau yooj yim nrhiav thiab ntsuas. Nws cov yam ntxwv fluorescence ua rau nws yog ib qho cuab yeej muaj txiaj ntsig zoo hauv kev tshawb fawb xws li molecular biology, biochemistry, thiab cell biology.
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Sodium dodecyl sulfate CAS: 151-21-3
Sodium dodecyl sulfate (SDS) yog ib qho tshuaj anionic surfactant uas siv ntau hauv ntau yam lag luam thiab kev tshawb fawb. Nws yog ib qho khoom dawb lossis hmoov uas yaj tau hauv dej thiab ua rau muaj zog, ruaj khov thaum sib xyaw. SDS paub txog nws lub peev xwm los yaj thiab rhuav tshem cov protein, ua rau nws muaj txiaj ntsig zoo hauv kev rho tawm protein, kev ntxuav, thiab cov txheej txheem electrophoresis. Tsis tas li ntawd, SDS siv dav ua cov tshuaj ntxuav hauv tsev thiab cov khoom siv tu tus kheej, nrog rau hauv kev siv ntxuav hauv kev lag luam. Nws kuj yog ib qho khoom xyaw tseem ceeb hauv ntau qhov kev sim biochemical thiab molecular biology, qhov twg nws siv rau kev lysis cell, DNA cais, thiab ua tus neeg sawv cev denaturing hauv gel electrophoresis.
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BCA-2K CAS: 207124-63-8 Tus nqi tsim khoom
BCA-2K sawv cev rau Beta-Carotene Apocarotenoid-2-Ketolase. Nws yog ib qho enzyme uas ua lub luag haujlwm tseem ceeb hauv biosynthesis ntawm cov nroj tsuag pigments hu ua apocarotenoids. Cov pigments no yog los ntawm cov precursor molecule beta-carotene thiab koom nrog ntau yam txheej txheem biological hauv cov nroj tsuag.
BCA-2K tshwj xeeb ua rau kev hloov pauv ntawm beta-carotene mus rau hauv cov apocarotenoids tshwj xeeb los ntawm kev ntxiv ib pawg ketone rau hauv lub molecule. Qhov kev ua haujlwm enzymatic no yog qhov tseem ceeb rau kev tsim cov apocarotenoids tshwj xeeb nrog cov haujlwm sib txawv ntawm cov kab mob thiab kev ua haujlwm hauv cov nroj tsuag.
Cov apocarotenoids uas BCA-2K tsim tawm tau pom tias muaj lub luag haujlwm hauv kev loj hlob ntawm cov nroj tsuag, kev teb rau kev ntxhov siab, thiab kev tiv thaiv cov kab mob thiab cov kab tsuag. Lawv kuj tuaj yeem ua haujlwm ua cov cim qhia uas koom nrog ntau yam txheej txheem ntawm lub cev.
Kev kawm txog BCA-2K thiab nws lub luag haujlwm hauv apocarotenoid biosynthesis tsis yog tsuas yog tseem ceeb rau kev nkag siab txog cov nroj tsuag biology xwb tab sis kuj muaj peev xwm siv tau rau hauv cov cheeb tsam xws li kev txhim kho qoob loo, kev yug tsiaj, thiab kev tsim cov khoom ntuj tsim nrog cov txiaj ntsig kho mob lossis kev noj qab haus huv.
