Elastin, pig is a matrix protein abundantly present in the extracellular matrix, characterised by insolubility, amorphous structure, and extensive cross-linking. It provides organs and tissues with tensile and retractive capabilities and exhibits resistance to various proteases except elastase, commonly used as a biomaterial for tissue repair.

GelMA (Gelatin Methacryloyl), with a methacrylation degree of 90%, is a derivative obtained from the reaction of gelatin with chitin anhydride (methacrylic anhydride, MA). The hydrogel formed by Gelatin Methacryloyl exhibits excellent biocompatibility and biodegradability, along with light cross-linking capability and adjustable physical properties. Under the influence of the photoinitiator LAP (HY-44076), GelMA, 90% methacrylation, self-assembles into fibrous hydrogels targeting bioactive adhesion sites, providing inherent support and biodegradation activity to tissue cells. Its applications include cell culture, biological 3D printing, tissue engineering, drug delivery, and biosensor development.

2,5-Dioxopyrrolidin-1-yl 6-acrylamidohexanoate can be used as a cross-linking agent to immobilise matrix proteins on gel surfaces, enhancing cell-matrix interactions, and is widely applied in biochemical experiments and drug synthesis research.

I2959, widely known as Irgacure 2959, is a photoinitiator extensively used for ultraviolet light-induced photocrosslinking of hydrogels in biomedical applications and is particularly utilized in combination with carboxymethylcellulose (CMA) hydrogels as a bioink for bio 3D printing applications; furthermore, I2959 is recognized for its high radical generation efficiency under UV exposure but also exhibits concentration-dependent cytotoxicity to rapidly dividing cell lines.

TPO-L is a photoinitiator used in 3D printing resins, facilitating two-photon induced polymerization. The two-photon absorption cross-section spectrum of Lucirin TPO-L exhibits a peak of 1.2 GM at 610 nm. Although the two-photon absorption cross-section is relatively small, Lucirin TPO-L demonstrates a high polymerization quantum yield.

Poly-D-lysine hydrobromide (MW 150000-300000), is a synthetic polymeric substrate widely used in neural cell culture to enhance cell adhesion. Poly-D-lysine hydrobromide additionally functions as a calcium-sensing receptor (CaSR) agonist peptide, broadening its relevance in both cell biology and neurobiological research applications.

2-[2-(2-ethoxyethoxy)ethoxy]ethan-1-ol (Tri(ethylene glycol) monoethyl ether) is an organic solvent with high solubility and coupling properties, which can be used as a chemical synthesis intermediate for the preparation of ester derivatives, and is mainly used as a high-boiling solvent for paints, inks, dyes and resins.

Methacrylated Type I collagen (Col1MA) is a methacrylate-modified scaffold material used in tissue engineering, retaining the fundamental properties of natural collagen. In the presence of photoinitiator LAP, it self-assembles into a fibrous hydrogel, targeting bioactive adhesion sites to inherently support tissue cells and offer biodegradability. Applications include cell culture, bio 3D printing, and tissue engineering.

HS-PEG-NH2 (Mn 3500) is a bifunctional crosslinker utilized in the synthesis of PEG hydrogels.

Poly(ethylene glycol) dibenzoate (MW 410) is a derivative of polyethylene glycol (PEG).

GelMA (Gelatin Methacryloyl), with 90% methacrylation and green fluorescence, is a modification of gelatin achieved by grafting fluorescent molecules onto the polymer. Green Fluorescent Gelatin Methacryloyl acts as a scaffold beneficial for creating tissue analogs ranging from the vascular system to cartilage and bone, promoting cell proliferation and diffusion. In the presence of the photoinitiator LAP, GelMA self-assembles into fibrous hydrogels that target bioactive adhesion sites, providing essential support and biodegradability for tissue cells. Applications encompass cell culture, bio 3D printing, tissue engineering, among others.

Silk fibroin, suitable for cell culture, is a widely used natural biopolymer ideal for cell culture. [Silk fibroin] serves as a scaffold material that meets specific requirements for biocompatibility, biodegradability, and tissue specificity.

6-Arm-PEG-FA (MW 5000) (6-Arm-PEG-Folate (MW 5000)) is a PEG derivative modified with Folic acid. Polyethylene glycol enhances solubility and stability, reduces the immunogenicity of peptides and proteins, and can inhibit nonspecific binding of charged molecules to modified surfaces. Folic acid (-FA) has a high affinity for folate receptors, making it useful for targeted drug delivery to cell membrane receptors.

6-Arm-PEG-NHS (MW 2000) is a six-arm polyethylene glycol derivative that is applicable for peptide modification and drug delivery.

6-Arm-PEG-Mal (MW 400) is a PEG derivative modified with Maleimide that forms stable thioether bonds with thiol groups (-SH). PEG modification enhances solubility and stability while reducing the immunogenicity of proteins and peptides.

8-Arm-PEG-DSPE (MW 2000) is a PEG crosslinker that connects PEG branched chains to a DSPE phospholipid. It is applicable in drug delivery, gene transfection, and vaccine delivery.

8-Arm-PEG-Cholesterol (MW 600) is a PEG derivative that links cholesterol (Cholesterol) to the ends of an 8-arm polyethylene glycol (8-Arm PEG). This compound can be utilized in drug delivery applications.

8-Arm-PEG-Biotin (MW 400) is a multi-arm polyethylene glycol (PEG) derivative, with each of its eight arms ending in a biotin group. This compound enables PEGylation through high affinity and specific binding to streptavidin and avidin.

4-Arm PEG-alkyne (MW 40000) is a multi-arm PEG derivative, featuring alkyne groups at the end of each of its four arms attached to a pentaerythritol core. The PEG alkyne can be utilized in PEGylation through a copper-catalyzed click chemistry reaction with azides.

4-Arm PEG-Azide (MW 10000) (4-Arm PEG-N3 (MW 10000)) is a multi-arm PEG derivative, comprising a pentaerythritol core with azide groups at both ends of its four arms.

4-Arm-PEG-DSPE (MW 5000) is a PEG crosslinking agent that combines four PEG branches with a DSPE phospholipid. It is utilized in drug delivery, gene transfection, and vaccine delivery.

4-Arm-PEG-FA (MW 10000) [4-Arm-PEG-folate (MW 10000)] is a PEG derivative where each end of the PEG chains is attached to a Folic acid molecule. Folic acid exhibits high affinity for folate receptors, making it suitable for targeting cell membrane receptors in drug delivery applications.

4-Arm-PEG-FA (MW 5000) [4-Arm-PEG-folate (MW 5000)] is a PEG derivative where each PEG chain terminus is linked to a folic acid molecule. Folic acid has a high affinity for folate receptors, making it suitable for targeting cell membrane receptors in drug delivery systems.

4-Arm PEG-Azide (MW 40000) [4-Arm PEG-N3 (MW 40000)] is a multi-branched polyethylene glycol derivative, featuring azide groups at the termini of each of its four arms, all of which are connected to a pentaerythritol core.