Specific analysis of such neurotransmitters as dopamine by the aptamer electrodes in biological fluids is detrimentally affected by nonspecific adsorption of media, particularly pronounced at positive charges of the electrode surface at which dopamine oxidizes. Here, we show that dopamine analysis at the RNA-aptamer/cysteamine-modified electrodes is strongly inhibited in undiluted human serum and blood due to nonspecific interfacial adsorption of serum and blood components.
We demonstrate that nonspecific adsorption of serum proteins (but not of blood components) could be minimized when analysis is performed in a flow and injections of serum samples are followed by washing steps in a phosphate buffer solution (PBS) carrier. Under those conditions, the dopamine-aptamer binding affinity in whole human serum of (1.9 ± 0.3) × 104 M-1 s-1 was comparable to the (3.7 ± 0.3) × 104 M-1 s-1 found in PBS, and the dopamine oxidation signal linearly depended on the dopamine concentration, providing a sensitivity of analysis of 73 ± 3 nA μM-1 cm-2 and a LOD of 114 ± 8 nM. The flow-injection apatmer-electrode system was used for direct analysis of basal levels of dopamine in undiluted human serum samples, without using any physical separators (membranes) or filtration procedures.
The results suggest a simple strategy for combatting biosurface fouling, otherwise most pronounced at positive electrode potentials used for dopamine detection, and assist in designing more efficient antifouling strategies for biomedical applications.

KT 5823

B6673-.1 100 µg
EUR 190

KT 5823

B6673-.25 250 µg
EUR 361

KT 5720

B9002-.05 50 µg
EUR 145

KT 5720

B9002-.1 100 µg
EUR 232

KT 5720

B9002-.25 250 µg
EUR 483

KT 5720

B9002-.5 500 µg
EUR 818

PST- KT

PVT11358 2 ug
EUR 370

Plasminogen Receptor (KT) (PLGRKT) Antibody

20-abx318476
  • EUR 411.00
  • EUR 1845.00
  • EUR 599.00
  • EUR 182.00
  • EUR 300.00
  • 100 ug
  • 1 mg
  • 200 ug
  • 20 ug
  • 50 ug
  • Shipped within 5-10 working days.

KT 5823 (PKG kinase inhibitor)

SIH-458-100UG 100 µg
EUR 205
  • KT5823 is a potent, selective, and reversible inhibitor of Protein Kinase G (PKG). It is a derivative of K-252a. KT5823 has been shown to inhibit SNP-stimulated PKG activity in dispersed smooth muscle cells. It has also been observed to dose-dependen
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Description: The substance KT 5823 is a pkg kinase inhibitor. It is synthetically produced and has a purity of ?98%. The pure substance is white solid which is soluble in DMSO (20 mg/ml), dimethyl formamide (20 mg/ml) and ethyl acetate (5 mg/ml).

KT 5823 (PKG kinase inhibitor)

SIH-458-500UG 500 µg
EUR 569
  • KT5823 is a potent, selective, and reversible inhibitor of Protein Kinase G (PKG). It is a derivative of K-252a. KT5823 has been shown to inhibit SNP-stimulated PKG activity in dispersed smooth muscle cells. It has also been observed to dose-dependen
  • Show more
Description: The substance KT 5823 is a pkg kinase inhibitor. It is synthetically produced and has a purity of ?98%. The pure substance is white solid which is soluble in DMSO (20 mg/ml), dimethyl formamide (20 mg/ml) and ethyl acetate (5 mg/ml).

AlbuVoid Buffer Kit - 500

AVBK-500 500 mL
EUR 615
Description: Albuvoid™ Buffer

HemoVoid Buffer Kit - 500

HVBK-500 500 mL
EUR 615
Description: HemoVoid™ Buffer

UPCK Buffer Kit - 500

UPBK-500 500 mL
EUR 615
Description: UPCK™ Buffer

500 BlotBot Reagent Reservoirs

RRVR-500 500pack
EUR 534
Description: BlotBot reagent reservoirs will allow dispensing of unique reagents tray during processing. Pack of 500.

WASH BOTTLE 500 ML, LDPE

1300P-500 12/pk
EUR 81
Description: Reusable Plastics; Resusable Bottles

REAGENT BOTTLE,500 ML, PP

1500P-500 10/pk
EUR 62
Description: Reusable Plastics; Resusable Bottles

ERLENMEYER FLASK, 500 ML, PP

4985P-500 6/pk
EUR 64
Description: Reusable Plastics; Reusable Erl Flasks

ERLENMEYER FLASK, 500 ML, PMP

4990P-500 6/pk
EUR 92
Description: Reusable Plastics; Reusable Erl Flasks

DBCO-PEG-Biotin,500

HE048041-500-100mg 100mg
EUR 765
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Rat Chondroitin Sulfate Epitope 3B3(CS3B3 ELISA Kt

GA-E0451RT-48T 48T
EUR 317

Rat Chondroitin Sulfate Epitope 3B3(CS3B3 ELISA Kt

GA-E0451RT-96T 96T
EUR 496

Rat Chondroitin Sulfate Epitope 3B3(CS3B3 ELISA Kt

QY-E11201 96T
EUR 361

Mouse Chondroitin Sulfate Epitope 3B3(CS3B3 ELISA Kt

QY-E20317 96T
EUR 361

PLGA(50:50)?8K?-PEG-Mal,500

HE086022-500-500mg 500mg
EUR 765
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Alkyne CPG modifier 500, 500 mg

32860 500 mg
EUR 193

FAM CPG 500, 6-isomer, 500 mg

35760 500 mg
EUR 249

TFA-Amino modifier CPG 500, 500 mg

31860 500 mg
EUR 193

miRZip-500 anti-miR-500 microRNA construct

MZIP500-PA-1 Bacterial Streak
EUR 684
  • Category: MicroRNA Tools

Cellufine S-500

21-200 100 ml
EUR 388

Cellufine S-500

21-201 500 ml
EUR 697

Cellufine S-500

21-202 5 lt Ask for price

Cellufine S-500

21-203 10 lt Ask for price

Cellufine A-500

675980327 100 ml
EUR 324

Cellufine A-500

675980335 10 lt Ask for price

Cellufine Q-500

675982327 100 ml
EUR 366

Cellufine Q-500

675982335 10 lt Ask for price

Cellufine C-500

675983327 100 ml
EUR 324

Cellufine C-500

675983335 10 lt Ask for price

Cellufine A-500

19805 500 ml
EUR 526

Cellufine A-500

19806 5 lt Ask for price

Cellufine C-500

19865 500 ml
EUR 526

Cellufine C-500

19866 5 lt Ask for price

Cellufine Q-500

19907 500 ml
EUR 718

Cellufine Q-500

19908 5 lt Ask for price

ZeptoGel (500 mL)

0801195 500 mL
EUR 327.68
  • What is the product classification?
  • ZeptoGel is marked as RUO.
Description: Please contact Gentaur in order to receive the datasheet of the product.

IMDM, 500 ml

411 500 ml
EUR 89

mPEG-SH,500

33-MF001003-500
  • EUR 259.00
  • EUR 677.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

mPEG-COOH?500

33-MF001017-500
  • EUR 198.00
  • EUR 494.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

mPEG-MAL,500

33-MF001022-500
  • EUR 235.00
  • EUR 605.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Measuring Spoon 500

MSP05 25pack
EUR 123
Description: 500uL (0.5mL) measuring spoon. Ideal for aliquoting beads into tubes.

500 ML SPINNER FLASK, 100 MM CENTRE NECK, 2 X 45 MM SIDEARMS

4500-500 1/pk
EUR 529
Description: Bioprocess Vessels; Spinner Flask 70

TUBE,MICENT,1.7ML,NAT,SC,NS,BK,500/500

3620 500/pk
EUR 56
Description: Microcentrifuge Tubes; Snap Cap Tubes

Factor XI Antibody Pair

55R-FAC11-KT 5 plates
EUR 745
Description: Factor XI antigen Matched Pair antibody Set for ELISA

Factor IX Antibody Pair

55R-FAC9-KT 5 plates
EUR 760
Description: Factor IX antigen Matched Pair antibody Set for ELISA

Fibrinogen Matched Pair antibody Set

55R-FIBRINO-KT set
EUR 833
Description: Fibrinogen Matched Pair antibody Set for detection of Human Fibrinogen in the research laboratory

Mouse RANKL ELISA Kit

55R-MRANKL-KT 1 kit
EUR 658
Description: ELISA kit for detection of Mouse RANKL in the research laboratory

VWF Antibody Pair

55R-VWF-KT 5 plates
EUR 775
Description: VWF antigen Matched Pair antibody Set for ELISA

Cal-500™ AM

20412 10x50 ug
EUR 219
  • R-phrase: R20, R21, R22
  • H-Phrase: H303, H313, H333
  • Symbol for dangerous compounds: Xn
  • UNSPEC Code: 12352200

MC Cellufine S-500

21-200-51 5 x 1 ml
EUR 239

MC Cellufine S-500

21-200-55 5 x 5 ml
EUR 420

Protonex™ Green 500

21215 1 mg
EUR 219
  • R-phrase: R20, R21, R22
  • H-Phrase: H303, H313, H333
  • Symbol for dangerous compounds: Xn
  • UNSPEC Code: 12352200

PLASTIC CLAMP, 500 ML

480151 1/pk
EUR 70
Description: Lab Equipment; Constant Temperature Equipment

MC Cellufine C-500

19-800-51 5 x 1 ml
EUR 217

MC Cellufine C-500

19-800-55 5 x 5 ml
EUR 345

MC Cellufine A-500

19-805-51 5 x 1 ml
EUR 217

MC Cellufine A-500

19-805-55 5 x 5 ml
EUR 345

MC Cellufine Q-500

19-907-51 5 x 1 ml
EUR 217

MC Cellufine Q-500

19-907-55 5 x 5 ml
EUR 345

Augmedium™, Powder 500

124 500 ml
EUR 566

500 G HEPES, POWDER

61-034-RO 500 g/pk
EUR 146
Description: Media Catalog; Cell Culture Reagents

Refolding Buffers - 500 ml

612 500 ml
EUR 247

BMZERO™, 500 ml

401 500 ml
EUR 105

EPM2™, 500 ml

402 500 ml
EUR 107

HPC1™, 500 ml

403 500 ml
EUR 110

cleaning solution 500 ml

B530 ea
EUR 30

Biotin-PEG-COOH,500

33-HE041017-500
  • EUR 605.00
  • EUR 1714.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

SH-PEG-SH,500

33-HO003003-500
  • EUR 259.00
  • EUR 677.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

AlKyne-PEG-AlKyne,500

33-HO007007-500
  • EUR 283.00
  • EUR 747.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

COOH-PEG-COOH,500

33-HO017017-500
  • EUR 167.00
  • EUR 399.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

SC-PEG-SC,500

33-HO023023-500
  • EUR 167.00
  • EUR 399.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

THPTA ligand, 500 mg

H4050 500 mg
EUR 216

HO-PEG-COOH,500

33-HE002017-500
  • EUR 198.00
  • EUR 494.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

SH-PEG-COOH,500

33-HE003017-500
  • EUR 519.00
  • EUR 1456.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

HS-PEG-NHS,500

33-HE003023-500
  • EUR 445.00
  • EUR 1234.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

NH2-PEG-COOH,500

33-HE005017-500
  • EUR 359.00
  • EUR 975.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

N3-PEG-OH,500

33-HE006002-500
  • EUR 568.00
  • EUR 1603.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

N3-PEG-BIOTIN,500

33-HE006041-500
  • EUR 827.00
  • EUR 2380.00
  • 1g
  • 5g
Description: A high purity chemical with various applications in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Silicone oil, 500 cSt

GK1916-1L 1 l
EUR 150

Silicone oil, 500 cSt

GK1916-250ML 250 ml
EUR 78

rno-miR-500 Primers

MP-r00247 150 ul / 10 uM
EUR 176

mmu-miR-500 Primers

MPM00559 150 ul / 10 uM
EUR 121

Hinc II unit: 500

YRHINC2 1 vial Ask for price

Nru I unit: 500

YRNRU1 1 vial Ask for price

Cal-500™, potassium salt

20410 10x50 ug
EUR 219
  • R-phrase: R20, R21, R22
  • H-Phrase: H303, H313, H333
  • Symbol for dangerous compounds: Xn
  • UNSPEC Code: 12352200

Protonex™ Green 500, SE

21216 1 mg
EUR 219
  • R-phrase: R20, R21, R22
  • H-Phrase: H303, H313, H333
  • Symbol for dangerous compounds: Xn
  • UNSPEC Code: 12352200

Protonex™ Green 500 Dextran

21217 1 mg
EUR 219
  • R-phrase: R20, R21, R22
  • H-Phrase: H303, H313, H333
  • Symbol for dangerous compounds: Xn
  • UNSPEC Code: 12352200

Long trebler phosphoramidite, 500 mg

34260 500 mg
EUR 216

Alkyne CPG 1000A, 500 mg

35860 500 mg
EUR 193