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Rimiducid (AP1903) Dimerizer Agent

Name: Rimiducid (AP1903)
Brand: Selleck Chemicals
SKU: S9726
Availability: InStock
Rating: 5 (3 reviews)

Cat.No.S9726

Rimiducid (AP1903) is a chemical protein dimerizer that binds tightly to the target FKBP fusion protein while binding minimally to the abundant natural FKBP. This compound elicits potent and dose-dependent apoptosis of cells in culture expressing dimerizer-dependent Fas constructs, with an EC50 of ≈0.1 nM.

Chemical Structure

Molecular Weight: 1411.63

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Quality Control

Batch: S972601 DMSO]100 mg/mL]false]Ethanol]100 mg/mL]false]Water]Insoluble]false Purity: 99.89%

Cited in Nature Medicine for its top-tier quality
COA
SDS/MSDS
Datasheet

99.89

Related Targets	Bcl-2 Caspase PD-1/PD-L1 Ferroptosis p53 Apoptosis related Synthetic Lethality STAT TNF-alpha Ras
Other FKBP Inhibitors	dTAG-13 Shield-1 (Shld1) AP20187 (B/B Homodimerizer) S107 hydrochloride dTAGV-1 TFA SAFit2

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (70.84 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	2.500mg/ml (1.77mM)	Taking the 1 mL working solution as an example, add 50 μL of 50 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	2.500mg/ml (1.77mM)	Taking the 1 mL working solution as an example, add 50 μL of 50 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	1411.63	Formula	C₇₈H₉₈N₄O₂₀	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	195514-63-7	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			SMILES	CCC(C(=O)N1CCCCC1C(=O)OC(CCC2=CC(=C(OC)C=C2)OC)C3=CC(=CC=C3)OCC(=O)NCCNC(=O)COC4=CC=CC(=C4)C(CCC5=CC(=C(OC)C=C5)OC)OC(=O)C6CCCCN6C(=O)C(CC)C7=CC(=C(OC)C(=C7)OC)OC)C8=CC(=C(OC)C(=C8)OC)OC

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	FKBP fusion protein
In vitro	Rimiducid (AP1903) induces effective and dose-dependent apoptosis in the culture expressing dimer-dependent Fas constructors, indicating that it causes the activation of Fas signaling without interference from endogenous FKBP.
In vivo	Eliciting a dose-dependent decrease in serum hGH levels with a half-maximal effective dose of 0.4±0.1 mg/kg, Rimiducid (AP1903) is functional in activating Fas signaling in vivo.
References	[1] https://pubmed.ncbi.nlm.nih.gov/11504275/ [2] https://pubmed.ncbi.nlm.nih.gov/9724721/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-05-15)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06066424	RECRUITING	Solid Tumors	M.D. Anderson Cancer Center	2023-10-24	PHASE1
NCT07553390	NOT_YET_RECRUITING	Breast Cancer	M.D. Anderson Cancer Center	2026-10-01	PHASE1
NCT06984341	WITHDRAWN	Systemic Lupus Erythematosus	Genentech, Inc.	2026-06-30	PHASE1
NCT03741127	ACTIVE_NOT_RECRUITING	Multiple Myeloma	Poseida Therapeutics, Inc.	2018-10-29	PHASE1
NCT07164469	NOT_YET_RECRUITING	Large B-cell Lymphoma; Hodgkin Lymphoma	M.D. Anderson Cancer Center	2026-12-28	PHASE2
NCT01494103	ACTIVE_NOT_RECRUITING	Acute Lymphoblastic Leukemia; Myelodysplastic Syndrome; Acute Myeloid Leukemia; Chronic Myelogenous Leukemia; Non Hodgkin Lymphoma; Hemophagocytic Lymphohistiocytosis; Familial Hemophagocytic Lymphohistiocytosis; Hemophagocytic Syndrome; Epstein Barr Virus Infection; X-linked Lymphoproliferative Disease	Baylor College of Medicine	2011-11	PHASE1

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