Phospholipids are commonly used polymeric gene carriers. DSPE with high molecular weight can effectively compound DNA, and has strong buffered capacity under endosomal pH conditions, showing good transfection efficiency for a variety of cells. However,DAPE is not easily degraded, and high molecular weight DAPE as a gene carrier may lead to short - or long-term cytotoxicity.

DSPE-PEG-Cy5.5is a phospholipid. Phospholipids have good biocompatibility and significant amphiphilic characteristics, making them the main and suitable dosage form or excipient in drug formulations, thereby achieving better therapeutic effects. "&B26&"can be used in drug delivery research."

The polymer with ketone mercaptan as the fragment can form the shell of the nanocore, and simultaneously contain the polyorubicin and light sensitive compounds to achieve dual roles. Ketothiol polymers can also be used directly as drug carriers to contain paclitaxel ROS responsive groups, often in combination with a variety of methods. ROS, as the connecting part, connects the hydrophilic part and the hydrophobic part of the nanocarrier. When the nanocarrier encounters ROS, it breaks and releases drugs: the ROS responsive group can also act as the part connecting drug molecules and nanocarriers to release drugs under oxidation. Common ROS responsive groups generally contain sulfur, boron and tellurium. In addition, in order to inactivate the protein, ROS responsive groups can also be used to block the active center of the protein. Common ROS responsive genes include: polypropylene sulfide, borate, thione, tellurium, selenium, ferrocene, anthocyanins, etc.

Macrocyclic ligands are ring complexes formed by multi-dentate ligands with O, N, P, S and other coordination atoms on the ring skeleton. The range of complexes is wide. According to their structural characteristics, complexes can be divided into the following types: simple complexes, chelates, polynuclear complexes, carbonyl complexes, metal clusters, sandwich complexes, and macrocyclic ligand complexes.

DSPE-PEG-DBCO is a kind of highly active phospholipid PEG derivative which can react with azide group. DBCO (dibenzocycloctene) is a commonly used copper-free click chemical with rapid and specific reactivity to molecules containing azides (-N3). DBCO-PEG derivatives have fast kinetics and good stability in aqueous buffers. The reaction between DBCO and the azide group allows DSPE to label and bind to the target substrate efficiently. DSPE (1, 2-distearoyl-SN-glycerol-3-phosphate ethanolamine) is a highly hydrophobic 18-carbon saturated phospholipid. Pegylated phospholipids are excellent liposomal preparation materials, which can be used for molecular encapsulation, gene transfection and drug delivery. Copper-free chemical reaction with easily synthesized diaryl azacycloctanone. Reactions of azide compounds with tense alkynes, such as cyclocycloalkynes, easily form triazole compounds without the need for toxic catalysts.

DSPE-PEG-OPSS, DSPE (1,2-distearoyl-sn-glycerol-3-phosphoethanolamine) is a saturated 18 carbon phospholipid, commonly used in the synthesis of liposomes. Polyethylene glycol (PEG) - coupled DSPE is hydrophilic and can be used for drug delivery, gene transfection and biomolecular modification. The PEG of phospholipid significantly improved the blood circulation time and stability of the capsule drug. Polyethylene glycol can enhance the solubility and stability, reduce the non-specific binding of charged molecules on the surface, and reduce the immunogenicity of polypeptides. Mercaptopyridine reacts with mercapto group to release pyridine ring and generate stable disulfide bond.

DSPE-PEG6-Mal is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.

DSPE-PEG2-mal is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.

DSPE-PEG-FITC, is a fluorescein attached PEG lipid. It can be used to prepare liposomes as drug carrier in targeted drug delivery. The polymer is modified with fluorescein (green) dye which can be used for staining cells, tissues, biomarkers, or nanoparticles.

DSPE-PEG Carboxylic acid (sodium), MW 2000 is a PEG-lipid that can be used to form micelles as nanoparticles for drug delivery. DSPE-PEG Carboxylic acid (sodium), MW 2000 increases the blood circulation time of liposomes.

NHS PEG DSPE can be easily incorporated into liposomes and other nanoparticles through the reaction of NHS with amine. DSPE peg NHS is one of the most commonly used reactive phospholipids that bind antibodies, proteins, peptides or other substrates to the surface of liposomes and other lipid peg nanoparticles. Pegylated phospholipids have longer blood circulation time and higher encapsulation molecular stability. We have developed a series of chemically reactive phospholipid peg products with high purity, various molecular weights and excellent chemical reactivity. These lipid peg conjugates exhibit excellent amphiphilic properties and provide superior advantages for the modification, preparation and transportation of small and large molecules.

DSPE-PEG-NPC is a linear heterobifunctional polyglycolation reagent containing DSPE phospholipids and NPC groups. It is a useful self-assembly reagent for preparing PEGylated liposomes or micelles, and also provides a combination of NPC group and thiol containing molecules.

Polyethylene glycol phospholipid is an excellent material to form liposomes, which can be used for gene transfection, vaccine delivery, drug transportation, and targeted drug delivery. Phospholipids are hydrophobic and hydrophilic. It can be used to modify protein drugs, peptide compounds, organic small molecule drugs, biological materials, etc. Cy7 labeled PEG derivatives are used for fluorescence tracing or fluorescence observation.

DSPE phospholipids can be used as pharmaceutical excipients for emulsification and drug solubilization, and are important materials for slow release drug preparations such as liposomes, fat milk and nanoparticles in recent years. Modification of phospholipid molecules can make these preparations have the ability of release and targeting under specific conditions. Common modification methods include: disintegration time; Introducing immune factors to enhance targeting; Introduce markers for diagnosis and tracking.

RGD's receptors are integrins αvβ3 and αvβ5, which can mimic cell adhesion proteins and bind specifically to 11 kinds of integrins, which can effectively adhere to biological materials. DSPE-PEG-RGD can be used to make micelles and vesicles. The liposomes formed by RGD-PEG-DSPE can act directly on the target to form an active targeting effect. Rgd-peg-dspe peptide RGD polyethylene glycol phospholipid can be used for passive targeting of micelles and vesicles, active targeting research and drug delivery. DSPE (1, 2-distearoyl-SN-glycerol-3-phosphate ethanolamine) is a saturated 18-carbon phospholipid commonly used in the synthesis of liposomes. Polyethylene glycol (PEG) -coupled DSPE is hydrophilic and can be used for drug delivery, gene transfection, and biomolecular modification. Polyethylene glycol can enhance solubility and stability, reduce the nonspecific binding of charged molecules, and reduce the immunogenicity of polypeptides.

Serum protein is the most abundant protein in plasma. Each protein molecule can carry seven fatty acid molecules. These fatty acid molecules bind to gaps in the protein, where their carbon-rich tails are buried safely away from surrounding water molecules. Serum proteins can also carry many other molecules that are insoluble in water. Serum proteins, in particular, can carry many drug molecules, such as ibuprofen. Human serum albumin (HSA) is a highly water-soluble globular monomer plasma protein with a relative molecular weight of 67KDa, composed of 585 amino acid residues, one sulfhydryl group and 17 disulfide bonds. In nanoparticle carriers, HSA nanoparticles are characterized by their ability to bind to various drug molecules, stability during storage and in vivo use, non-toxicity and antigenicity, biodegradability, repeatability, amplification of the production process and better control of release characteristics

Bovine serum albumin (BSA), a globulin in bovine serum, contains 607 amino acid residues with a molecular weight of 66.446KDa and an isoelectric point of 4.7. Bovine serum albumin has been widely used in biochemical experiments. The total length of BSA precursor protein is 607 amino acids. The precursor protein removes 18 signaling peptides and 6 propeptides from the N terminal to form a mature BSA protein with 583 amino acids and a molecular weight of about 66.5kDa. The surface of BSA contains a large number of carboxyl and amino groups, which can be used to bind the activated groups on the surface, and can be used as a carrier of small molecules. BSA is coupled with antibodies to form carrier-haptens conjugate.

Triphenyl phosphate is odorless, odorless white crystalline block or powder, its chemical formula is C18H15O4P, it is insoluble in cold water, but soluble in hot water above 50℃, when the solution temperature is reduced to room temperature, hydrophobic, precipitated from the solution. Slightly soluble in alcohol, soluble in ben, chloroform, C tong, easily soluble in ethyl mi. Triphenyl phosphate can be used as cellulose resin, vinyl resin, natural rubber and synthetic rubber flame retardant plasticizer with high flame retardant efficiency, excellent mechanical properties retention rate, transparency, softness and toughness, used in cellulose nitrate, various coatings, triacetate thin fat and film. Rigid polyurethane foam, engineering plastics plasticizer, flame retardant additive. Plastics are more and more widely used in construction, transportation, aviation, electrical appliances, daily furniture and other fields, but the fire accidents caused by the flammability of plastics have increasingly become a major problem, so the research and production of flame retardants have developed rapidly. Triphenyl phosphate is one of the main phosphorous flame retardants. (Flame retardant TPP) is a phosphorus-containing compound that can be used as a halogen-free environmentally friendly flame retardant for dissolution in organic solvents. Mainly used as a flame retardant plasticizer for engineering plastics and phenolic resin laminates; Pegylated phospholipids modified by TPP can be applied in drug release, nanotechnology and new materials research, and cell culture. As well as ligand research, peptide synthesis support, grafted polymer compounds, new materials and pegylated modified functional coatings and other active compounds.

DSPE phospholipids can be used as pharmaceutical excipients for emulsification and drug solubilization, and are important materials for slow release drug preparations such as liposomes, fat milk and nanoparticles in recent years. Modification of phospholipid molecules can make these preparations have the ability of release and targeting under specific conditions. Common modification methods include: disintegration time; Introducing immune factors to enhance targeting; Introduce markers for diagnosis and tracking. A covalent bond in the carbonyl group is connected to the hydrogen atom and formed by a univalent atomic group, called aldehyde group, aldehyde group structure simple formula is -CHO, aldehyde group is a hydrophilic group, so the organic matter with aldehyde group (such as acetaldehyde, etc.) has a certain water solubility. Aldehydes, sugars, aldehydes, glucose, maltose and other molecules contain aldehyde groups. The aldehydes are active and prone to condensation and nucleophilic addition reactions. The aldehyde group can be reduced to hydroxymethyl (-CH2OH) or oxidized to carboxylic (-COOH).

Polyethyleneimine (PEI), also known as polyethyleneimine, is a water-soluble polymer. Colorless or yellowish viscous liquid, hygroscopic, soluble in water, ethanol, insoluble in benzene. PEG-PEI, a copolymer of cationic poly (ethylene imide) (PEI) and polyethylene glycol (PEG), is a well-studied compound that significantly improves the delivery of oligonucleotides and nucleic acids (DNA, siRNA) in vitro and in vivo. By varying the MW of PEI and PEG, PEG-PEI drug conjugates, polymers, or nanoparticles with dynamic range of size, surface charge, and stability can be prepared, all of which are important for transfection efficiency. PEI-PEG-DSPE, polyethylenimine-PEGyl-phospholipid is an AB block copolymer with phospholipids at the end of PEG that can be used in drug delivery systems. DSPE, 1, 2-distearoyl-SN-glycerol-3-phosphate ethanolamine is a synthetic phospholipid that can be used as a membrane material with solubility and is suitable for the development of liposomes and phospholipid complexes.