(2R,4R)-4-Hydroxypyrrolidine-2-carboxylic acid hydrochloride 

cis-4-Hydroxy-D-proline hydrochloride is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). cis-4-Hydroxy-D-proline hydrochloride is also a alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.

ADCs are comprised of an antibody to which is attached an ADC cytotoxin through an ADC linker^[1].
PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

167.59

C₅H₁₀ClNO₃

77449-94-6

Solid

White to off-white

OC([C@H]1C[C@H](CN1)O)=O.Cl

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. Beck A, et al. Strategies and challenges for the next generation of antibody-drug conjugates. Nat Rev Drug Discov. 2017;16(5):315-337.  [Content Brief]

  [2]. Nalawansha DA, et al. PROTACs: An Emerging Therapeutic Modality in Precision Medicine. Cell Chem Biol. 2020;27(8):998-985.  [Content Brief]