Desamino lenalidomide-5-COOH is an E3 ubiquitin ligase cereblon (CRBN) ligand used to recruit the cereblon protein. Desamino lenalidomide-5-COOH can be linked to a target protein ligand via a linker to form a PROTAC.

2-(2,6-dioxopiperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindole-4-carboxylic acid is a lenalidomide analog that can be useful in PROTAC research.

Pomalidomide-C3-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and a linker used in PROTAC technology.

VHN22300, also known as (S,R,S)-AHPC-PEG3-Alkyne, is a ProTAC building block. This conjugate contains a von Hippel-Lindau (VHL)-recruiting ligand and a PEGylated crosslinker with pendant alkyne for click chemistry with an azide on the target ligand. When used with other protein degrader building blocks with a pendant alkyne group, parallel synthesis can be used to more quickly generate ProTAC libraries that feature variation in crosslinker length, composition, and E3 ligase ligand.

(S,R,S)-AHPC-amido-C7-acid incorporates a VHL ligand for the E3 ubiquitin ligase and a PROTAC linker. (S,R,S)-AHPC-amido-C5-acid can be used to design PROTACs.

Pomalidomide-piperazine hydrochloride is an E3 ligase ligand-linker conjugate containing a CRBN-based ligand and linker, which can be used to synthesize PROTAC.

BWA-522 intermediate-1 is an intermediate in the synthesis of PROTAC BWA-522 (HY-149433) and serves as a ligand molecule for cereblon E3 ubiquitin ligase. BWA-522 is an orally active small molecule protein-targeting chimera (PROTAC) that has significant degradation effects on AR-FL and AR-V7.

Thalidomide-4-O-C4-NH2 hydrochloride is a synthesized E3 ligase ligand-linker conjugate that incorporates the Thalidomide (HY-14658) based cereblon ligand and a linker used in PROTAC technology.

Thalidomide-propargyl is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-propargyl can be connected to the ligand for protein by a linker to form the IMiD containing PROTACs[1]. Thalidomide-propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Tri-GalNAc-DBCO is a PIP-GalNAc coupling compound that binds ASGPR to drive protein down-regulation and target compounds for protein degradation via copper-free strain-promoted azide-alkyne cycloaddition coupled to azide on a non-specifically labeled antibody.

M-MoDE-A (2) is a bifunctional small molecule that mediates the degradation of extracellular proteins through the asialoglycoprotein receptor (ASGPR).

D-MoDE-A (1) is a bifunctional small molecule that mediates the degradation of extracellular proteins through the asialoglycoprotein receptor (ASGPR).

Tri-GalNAc(OAc)3-Perfluorophenyl is a pentafluorophenyl modified Tri-GalNAc(OAc)3 (HY-148118), a tri-GalNAc ligand that can be used for the synthesis of GalNAc-LYTAC. GalNAc-LYTAC engages the asialoglycoprotein receptor for targeted protein degradation. tri-GalNAc: triantenerrary N-acetylgalactosamine; LYTAC: lysosome-targeting chimera.

tri-GalNAc-COOH acetylation is the acetylated and modified form of tri-GalNAc-COOH. tri-GalNAc-COOH acetylation can be used for the synthesis of LYTAC.

Tri-GalNAc(OAc)3 TFA is a tri-GalNAc ligand that can be used for the synthesis of GalNAc-LYTAC. GalNAc-LYTAC engages the asialoglycoprotein receptor for targeted protein degradation. tri-GalNAc: triantenerrary N-acetylgalactosamine; LYTAC: lysosome-targeting chimera.

Tri-GalNAc(OAc)3 is a triantenerrary N-acetylgalactosamine (tri-GalNAc) with an amino group, which is useful precursor for synthesis of GalNAc-LYTAC that engage the asialoglycoprotein receptor for targeted protein degradation. Tri-GalNAc(OAc)3 was first reported in Nat Chem Biol. 2021 Sep;17(9):937-946 (compound ). This product has no formal name at the moment.

tri-GalNAc-COOH is an asialoglycoprotein receptor (ASGPR) ligand that can be used for LYsosome TArgeting Chimera (LYTAC) research.

Tri-GalNAc(OAc)3 Cbz is a ligand for asialoglycoprotein receptor (ASGPR) where the sugars are protected by acetylation and the tris tertiary amine is protected by benzyloxycarbonyloxy (Cbz). This peracetylated tri-GalNAc(OAc)3 Cbz can be serve as a valuable building block for ASGPR-targeted therapies. Its three branches or arms, each ending in a GalNAc sugar, ensure strong binding to hepatocyte ASGPR. However, the key feature lies in its protective groups: acetylated sugars allow for controlled removal to expose reactive sites for conjugation, while the Cbz-protected amine provides stability and can be selectively cleaved to introduce a reactive amine group for further biomolecule attachment, ultimately enabling researchers to tailor tri-GalNAc(OAc)3 Cbz into customized conjugates for specific therapeutic applications.

MS41 is a selective eleven-nineteen leukemia (ENL) PROTAC degrader, with DC50s of 3.50 nM (MV4;11), 2.84 nM (SEMK2), 3.03 nM (Jurkat), and 26.58 nM (KASUMI1), respectively. MS41 effectively inhibits the growth of ENL-dependent leukemia cells, induces G1 cell cycle arrest and increases apoptosis. MS41 reduces the chromatin occupancy of ENL-associated transcription elongation machinery, and suppresses oncogenic gene expression and leukemia progression.

PROTAC BTK Degrader-11 is a PROTAC degrader that can break down BTK, with a DC50 of 1.7 nM.

Pomalidomide-C7-NH2 (Pomalidomide 4'-alkylC7-amine) hydrochloride is an E3 ligase ligand-linker conjugate. Pomalidomide-C7-NH2 hydrochloride can be used for the synthesis of PROTAC.

(S,R,S)-CO-C2-acid (VH 032 amide-alkylC2-acid) is a functionalized von-Hippel-Lindau (VHL) protein ligand that can be used in PROTAC research and development. (S,R,S)-CO-C2-acid contains an E3 ligand alkyl ligand for conjugation of target protein ligands.

E3 ligase Ligand 32 (First product in Example 52) is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 32 can be connected to the ligand for protein by a linker to form PROTACs and can be used for the synthesis of PROTAC SMARCA2/4-degrader-29 (HY-162743).

Pomalidomide-PEG2-COOH is a synthesized E3 ligase ligand-linker conjugate that incorporates the Pomalidomide based cereblon ligand and 2-unit PEG linker used in PROTAC technology.

QC-01-175 is a hetero-bifunctional molecule designed to engage both tau and Cereblon (CRBN) to trigger tau ubiquitination and proteasomal degradation (tau PROTAC).QC-01–175 effected clearance of tau in frontotemporal dementia (FTD) patient-derived neuronal cell models, with minimal effect on tau from neurons of healthy controls.QC-01–175 also rescued stress vulnerability in FTD neurons, phenocopying CRISPR-mediated MAPT-knockout.

(S,R,S)-AHPC-PEG2-C4-Cl (VH032-PEG2-C4-Cl) is a conjugate of ligands for E3 and 13-atom-length linker. The connector of linker is Halogen group. (S,R,S)-AHPC-PEG2-C4-Cl incorporates the (S,R,S)-AHPC based VHL ligand and an alkyl/ether-based linker. (S,R,S)-AHPC-PEG2-C4-Cl is capable of inducing the degradation of GFP-HaloTag7 in cell-based assays.

E3 ligase Ligand 9 is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 9 can be connected to the ligand for protein by a linker to form PROTACs or SNIPERs. PROTACs are inducers of ubiquitination-mediated degradation of cancer-promoting proteins.