Xi'an ruixi Biological Technology Co

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Catalog	name	Description	price
R-C-5803	MPEG2k-PCL2k-PEI1.8k	PEI is a cationic polymer known for its ability to interact with negatively charged molecules such as DNA and RNA.It can condense DNA or RNA into compact nanoparticles,protect the cargo from degradation,and facilitate its cellular uptake.The hydrophilic MPEG2k improves the stability and circulation time,whereas the hydrophobic PCL2k contributes to cargo encapsulation.	price>
R-M2-9820	Cholesterol-TK-MAL	Cholesterol-TK-MAL is a cholesterol-conjugated, redox-responsive linker molecule. Applications: Targeted liposome modification–attach thiol-bearing ligands for precision delivery. Stimuli-responsive nanocarriers–redox-sensitive release in tumor microenvironments. Prodrug systems–cholesterol insertion plus cleavable linker for controlled drug release. Surface functionalization–of micelles, lipid nanoparticles, or hybrid systems.	price>
R-M1-8187	DMG-PEG-Mannose	DMG-PEG-Mannose ,1,2-Dimyristoyl-sn-glycerol-methoxypolyethylene glycol-Mannose from kamulin.	price>
R-C-5804	PAMAM 4.5-COOH	Poly(amidoamine) (PAMAM) dendrimers,known as artificial proteins, have unique and well-defined molecular size and structure. It has previously been used to mimic protein-crystal interaction during biomineralization.Generation 4.5(4.5G)PAMAM with carboxylic acid(PAMAM-COOH)was synthesized and utilized to remineralize the surface of etched enamel in vitro.	price>
R-M2-9821	CY2-vitamin B12	CY2-Vitamin B12 is a fluorescently labeled vitamin B12 (cobalamin) conjugate, where CY2, a green-emitting cyanine dye (Ex/Em ≈ 490/510 nm), is covalently attached to vitamin B12. Applications: Cellular uptake studies – trace vitamin B12 internalization pathways. Targeted drug delivery – use B12 as a targeting ligand for cancer or deficiency-related therapies. In vitro and in vivo imaging – track B12 conjugates in biological systems. Diagnostic probes – for B12 receptor expression profiling.	price>
R-M1-8188	FAM-Alginate Oligosaccharide	FAM Alginate Oligosacharide,fluorescein-Alginate Oligosaccharide is a fluorescent marker.	price>
R-C-5805	DMPE-CY3	DMPE is a type of phospholipid that contains two myristoyl fatty acid chains. It is commonly used in liposome formulations due to its ability to self-assemble into liposomal structures.DMPE provides stability and structural integrity to liposomes and can also be incorporated into cell membranes.CY3 is a cyanine dye that emits in the red range of the visible spectrum(around 570-590 nm)when excited with an appropriate wavelength.	price>
R-M2-9822	Biotin labeled L-Ascorbic acid	Biotin labeled L-Ascorbic acid/Biotin-L-ascorbic acid is a biotinylated form of vitamin C (L-ascorbic acid), where a biotin moiety is covalently conjugated to the ascorbic acid molecule. This enables specific binding via the biotin-avidin/streptavidin interaction without significantly altering the core antioxidant properties of L-ascorbic acid (depending on conjugation site). Applications: Targeted delivery systems-conjugation to liposomes, micelles, or nanoparticles via biotin–avidin chemistry. Affinity purification or capture assays-immobilizing vitamin C on biotinylated platforms. Imaging and tracking-monitoring vitamin C distribution in biological systems. Biosensor development-for redox or antioxidant studies.	price>
R-M1-8189	DBCO-PEG12-NHS	DBCO-PEG12-NHS,DBCO-polyethylene glycol12-N-hydroxylsuccinimide ester from ruixi.Dbco (dibenzocyclooctyne) is a kind of cycloalkyne.It can react with azide through strain promoted 1,3-dipolar cycloaddition in aqueous solution.This biorthogonal reaction is also called copper free click reaction.This reaction has excellent selectivity and biocompatibility,so complementary reagents can form covalent bonds with functional biological systems.Copper free click reaction has always been a powerful tool for catalyst free bioconjugation.Dbco reagent has fast affinity and stability in aqueous buffer,which can be used to label azide modified biomolecules with high specificity and reactivity.Active esters modify molecules with primary amines.	price>
R-C-5806	PEI1800-COOH	PEI-COOH,PEI is a cationic polymer known for its high affinity to negatively charged molecules, such as DNA, RNA, or siRNA. It can condense and protect these nucleic acids, enabling efficient cellular uptake and gene delivery. However, unmodified PEI has been associated with cytotoxicity due to its strong positive charge.	price>
R-M2-9823	Zein-peg5k-mal	Zein-PEG5K-Mal/Zein-PEG5000-Maleimide is a bioconjugate consisting of zein (a hydrophobic plant-derived protein), a 5 kDa polyethylene glycol (PEG) linker, and a terminal maleimide (Mal) group. The PEG spacer enhances water solubility and biocompatibility, while the maleimide moiety allows specific conjugation to thiol groups (-SH) via Michael addition. Applications: Targeted drug delivery systems----zein nanoparticles with surface thiol-reactive sites for active targeting. Protein or peptide conjugation ----to introduce ligands for receptor-mediated delivery. Nanocarrier stabilization---- improving aqueous dispersion and stealth properties. Theranostics----as a platform for co-loading therapeutic and imaging agents.	price>
R-M1-8190	PNU159682-EDA-Gly3	PNU159682-EDA-Gly3, a drug-linker conjugate for ADC, consists a cleavable ADC linker EDA-Gly3 and a potent ADC cytotoxin PNU-159682.	price>
R-C-5807	PVP40K-COOH	PVP-COOH,Polyvinyl pyrrolidone-carboxylic acid (PVP-CA) is a copolymer that combines two different monomers:polyvinyl pyrrolidone(PVP)and carboxylic acid(CA)functional groups. PVP is a water-soluble polymer widely used in pharmaceuticals, cosmetics, and personal care products due to its excellent film-forming, stabilizing,and solubilizing properties.On the other hand, carboxylic acid groups contain a carboxyl functional group(-COOH),making them hydrophilic and capable of forming ionic interactions.	price>
R-M2-9824	Cy5-Vitamin C	Cy5-Vitamin C (Cy5-Labeled L-Ascorbic acid ) is a fluorescently labeled derivative of L-ascorbic acid (vitamin C), where a Cy5 cyanine dye (Ex/Em≈650/670 nm) is covalently conjugated to vitamin C. This modification allows for near-infrared (NIR) fluorescence imaging while retaining part of antioxidant of vitamin C or redox properties depending on the conjugation site. Applications: In vivo and in vitro imaging–monitor vitamin C biodistribution and uptake. Targeted delivery systems–conjugation to nanoparticles or liposomes for NIR tracking. Antioxidant therapy studies–visualize redox activity in cells or tissues. Biosensing platforms–detect redox changes with fluorescent readout.	price>
R-M1-8191	mPEG2K-TK-OH	Thioketal(TK) has the characteristics of active oxygen reaction.In ROS environment, the chemical bond of keto mercaptan breaks, forming ketone and mercaptan, realizing drug release. As the final product, mPEG2K-TK-OH has ROS response characteristics, so as to realize the drug delivery system.	price>
R-C-5808	CIS/ZnS QDs	CIS/ZnS quantum dots(QDs)are a type of semiconductor nanocrystals composed of copper indium disulfide(CIS)as the core material and a zinc sulfide (ZnS) shell.These QDs have gained significant attention in the field of optoelectronics and materials science due to their unique optical properties.By adding a ZnS shell,the QDs optical properties can be further improved due to increased stability,enhanced photoluminescence quantum yield,and reduced surface defects.The ZnS shell also acts as a barrier,preventing the diffusion of heavy metal ions from the CIS core and mitigating potential toxicity concerns.	price>
R-M2-9825	RB-taurine	RB-taurine/Rhodamine B-Taurine/Taurine-Rhodamine B/Taurine,Rhodamine B labed is a fluorescent conjugate in which Rhodamine B, a xanthene-based dye (Ex/Em≈540/625 nm), is covalently linked to taurine, a sulfonic acid–containing amino acid. This conjugation provides a highly fluorescent, water-soluble probe with potential bioactive properties from taurine. Applications: Cellular imaging & uptake studies–track taurine transport and biodistribution. Targeted delivery research–as a model to study taurine-mediated targeting. Biosensor and assay development–fluorescence-based detection of taurine pathways. Drug delivery systems–potential incorporation into liposomes or nanoparticles for dual functionality.	price>
R-M1-8192	cRGD-PEG5K-TK-NH2	CRGD-PEG5K-TK-NH2 is a peptide modified reactive oxygen species peg linked compound.Thioketal(TK) has the characteristics of active oxygen reaction.In ROS environment, the chemical bond of keto mercaptan breaks, forming ketone and mercaptan, realizing drug release. As the final product, cRGD-PEG5K-TK-NH2 has ROS response characteristics, so as to realize the drug delivery system.	price>
R-C-5809	DPPS-Para phenylborate ester	1,2-Dipalmitoyl-sn-glycero-3-phosphoserine, sodium salt (DPPS) is a form of phosphatidylserine (PS), a negatively charged phospholipid located in the inner leaflet of the cell membrane.	price>
R-M2-9826	cRGDfk-PEG600-MAL	cRGDfk-PEG600-Mal/cRGDfk-PEG600-Maleimide/Maleimide-PEG600-cRGDfk is a targeted, thiol-reactive bioconjugate composed. Applications: Targeted liposomes or nanoparticles–for cancer drug delivery and imaging. Protein or antibody conjugation–site-specific thiol coupling. Theranostic systems–dual targeting and imaging/therapy platforms. Surface modification–for implantable devices or biosensors targeting integrin-rich tissues.	price>

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