Vemircopan (ALXN2050) is an orally bioactive complement factor D (FD) inhibitor.

Physicochemical Properties

Molecular Formula	C29H28BRN7O3
Molecular Weight	602.4817
Exact Mass	601.143
CAS #	2086178-00-7
PubChem CID	126642840
Appearance	White to off-white solid powder
LogP	4.1
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	6
Heavy Atom Count	40
Complexity	1010
Defined Atom Stereocenter Count	3
SMILES	BrC1C([H])=C([H])C(C([H])([H])[H])=C(N=1)N([H])C([C@]1([H])C([H])([H])[C@@]2(C([H])([H])[H])C([H])([H])[C@@]2([H])N1C(C([H])([H])N1C2C([H])=C([H])C(C3=C([H])N=C(C([H])([H])[H])N=C3[H])=C([H])C=2C(C(C([H])([H])[H])=O)=N1)=O)=O
InChi Key	OCXAGXCMZACNEC-CTWZREHQSA-N
InChi Code	InChI=1S/C29H28BrN7O3/c1-15-5-8-24(30)33-27(15)34-28(40)22-10-29(4)11-23(29)37(22)25(39)14-36-21-7-6-18(19-12-31-17(3)32-13-19)9-20(21)26(35-36)16(2)38/h5-9,12-13,22-23H,10-11,14H2,1-4H3,(H,33,34,40)/t22-,23+,29-/m0/s1
Chemical Name	(1R,3S,5R)-2-[2-[3-acetyl-5-(2-methylpyrimidin-5-yl)indazol-1-yl]acetyl]-N-(6-bromo-3-methylpyridin-2-yl)-5-methyl-2-azabicyclo[3.1.0]hexane-3-carboxamide
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

References

[1]. Developments in anti-complement therapy; from disease to clinical trial. Mol Immunol. 2018 Oct;102:89-119.

Additional Infomation

Vemircopan is an orally bioavailable inhibitor of complement factor D (FD; CFD), a serine protease that cleaves complement factor B, with potential complement system inhibiting activity. Upon administration, vemircopan targets, binds to and blocks the activity of FD, and thereby inhibits cleavage of complement factor B into Ba and Bb in the alternative pathway of the complement cascade. This inhibits FD-mediated signaling and activation of the alternative complement pathway (ACP), blocks complement-mediated hemolysis in paroxysmal nocturnal hemoglobinuria (PNH) and prevents ACP-induced tissue damage. FD plays a key role in the activation of the ACP.

Solubility Data

Solubility (In Vitro)

DMSO: 50 mg/mL (82.99 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 1 mg/mL (1.66 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 10.0 mg/mL clear DMSO stock solution to 400 μL of PEG300 and mix evenly; then add 50 μL of Tween-80 to the above solution and mix evenly; then add 450 μL of normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 1 mg/mL (1.66 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 10.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 1 mg/mL (1.66 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 10.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.6598 mL	8.2990 mL	16.5981 mL
	5 mM	0.3320 mL	1.6598 mL	3.3196 mL
	10 mM	0.1660 mL	0.8299 mL	1.6598 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.