Anti-Human B7-H3 (Ifinatamab Biosimilar)

Cat # Size Price Quantity
5032011 mg$175
5032025 mg$480
50320320 mg$960

Product Details


CloneIfinatamab
ApplicationFlow cytometry, animal model study
Host SpeciesMammalian cells
FormatLiquid
Product DescriptionIfinatamab Biosimilar, Human B7-H3 Monoclonal Antibody
IsotypeHuman IgG1
Regulatory StatusRUO
ClonalityRecombinant
ImmunogenHuman B7-H3
Species specificityHuman
Purity>95% by reducing SDS-PAGE
GradeIn vivo
Min Sample Size1 mg
Storage Conditions4ºC
Maximal Shelf Life12 months
SynonymsCD276
See All FormatsClone Ifinatamab

Background Information


Ifanatamab, also known as Ifinatamab deruxtecan or DS-7300a, is a humanized monoclonal antibody belonging to the immunoglobulin G1 kappa (IgG1κ) subclass. It is engineered to recognize and bind to the human B7-H3 (CD276) cell surface glycoprotein, a member of the B7 family involved in immune regulation and intercellular signaling. As a therapeutic, the Ifanatamab molecule is part of an antibody–drug conjugate (ADC) system, where the IgG1 antibody is covalently linked to a cytotoxic topoisomerase I inhibitor, deruxtecan, via a cleavable peptide-based linker. The complete conjugate typically displays a molecular weight near 150 kilodaltons (kDa) and maintains the classical Y-shaped antibody configuration.

The antibody portion of Ifanatamab consists of two heavy chains and two light chains joined by disulfide bonds. The variable (VH and VL) domains form the antigen-binding regions, containing complementarity-determining regions (CDRs) that confer high specificity toward epitopes on the extracellular domains of B7-H3. The binding mechanism involves non-covalent interactions, including hydrogen bonds and hydrophobic contacts, ensuring nanomolar-level affinity. Upon binding to B7-H3 on the cell surface, the ADC-antigen complex undergoes receptor-mediated endocytosis, transporting the conjugate into the lysosomal compartment of the target cell.

The Fc (fragment crystallizable) region of the IgG1 backbone supports molecular stability and prolonged half-life by engaging neonatal Fc receptors (FcRn), while maintaining minimal immune effector activation.

Data Sheets


Anti-Human B7-H3 (Ifinatamab Biosimilar) TDS

Related Protocols


Flow Cytometry Protocol


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