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Anlotinib (AL3818) Dihydrochloride VEGFR2 Inhibitor

Cat.No.S8726

Anlotinib (AL3818) is a highly potent and selective VEGFR2 inhibitor with IC50 less than 1 nM. It has broad-spectrum antitumor potential in clinical trials. Please use saline solution rather than PBS for dilutions. PBS may cause precipitation.
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Quality Control

Batch: Purity: 99.93%
99.93

Cell Culture, Treatment & Working Concentration

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
U-87MG Function assay 0.01, 0.1, 1, 10 and 100 μM 1.5 h inhibited PDGF-BB-stimulated phosphorylation of PDGFRβ, AKT and ERK in U-87MG cells 29446853
Mo7e Function assay 0.01, 0.1, 1, 10 and 100 μM 1.5 h Anlotinib inhibited SCF‐1‐stimulated phosphorylation of c‐Kit, AKT and ERK in Mo7e cells 29446853
HUVEC Function assay 0.01, 0.1, 1, 10 and 100 μM 1.5 h anlotinib inhibited VEGF‐stimulated intracellular phosphorylation of VEGFR2 in a concentration‐dependent way in HUVEC with a subnanomolar IC50 value 29446853
A549 Cell viability assay 24, 48 and 72 h IC50=64.82 μM(t=24 h); IC50=30.34 μM(t=48 h); IC50=17.29 μM(t=72 h) 30755242
NCI-H1975 Cell viability assay 8 μg/ml 24 h Cell viability was decreased remarkably 30871526
Calu-1 Cell viability assay 24, 48 and 72 h IC50=61.23 μM(t=24 h); IC50=36.8 μM(t=48 h); IC50=28.64 μM(t=72 h) 30755242
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

Water : 96 mg/mL

DMSO : 48 mg/mL (99.92 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : Insoluble

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Mass Concentration Volume Molecular Weight
Dilution Calculator Molecular Weight Calculator

In vivo
Batch:

In vivo Formulation Calculator (Clear solution)

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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
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Chemical Information, Storage & Stability

Molecular Weight 480.36 Formula

C23H22FN3O3.2HCl

Storage (From the date of receipt) 3 years -20°C powder
CAS No. 1360460-82-7 -- Storage of Stock Solutions

Synonyms N/A SMILES CC1=CC2=C(N1)C=CC(=C2F)OC3=C4C=C(C(=CC4=NC=C3)OCC5(CC5)N)OC.Cl.Cl

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC50/Ki
VEGFR2
(Cell-free assay)
0.2 nM
VEGFR3
(Cell-free assay)
0.7 nM
c-Kit
(Cell-free assay)
14.8 nM
c-Kit
(Cell-free assay)
14.8 nM
c-Kit
(Cell-free assay)
14.8 nM
In vitro
Anlotinib occupies the ATP-binding pocket of VEGFR2 tyrosine kinase and shows high selectivity and inhibitory potency (IC 50 <1 nmol/L) for VEGFR2 relative to other tyrosine kinases. Anlotinib inhibits VEGFR2 and VEGFR3 with IC50 values of 0.2 and 0.7 nmol/L, respectively. The inhibitory potency of anlotinib against VEGFR1 is lower, with an IC50 value of 26.9 nmol/L. The IC50 values of anlotinib for inhibition of the PDGFR-related kinases c-Kit and PDGFRβ are 14.8 and 115.0 nmol/L, respectively. Anlotinib has little effect on the activity of other kinases, including c-Met, c-Src, EGFR and HER2, even at a concentration of 2000 nmol/L. Anlotinib inhibits VEGF-induced signaling and cell proliferation in HUVEC with picomolar IC50 values. However, micromolar concentrations of anlotinib are required to inhibit tumor cell proliferation directly in vitro. Anlotinib significantly inhibits HUVEC migration and tube formation; it also inhibits microvessel growth from explants of rat aorta in vitro.
Kinase Assay
Enzyme-linked immunosorbent assay
Inhibitory activity of anlotinib against tyrosine kinases was determined using ELISA. Reaction of ATP with tyrosine kinase was initiated in reaction buffer (50 mmol/L HEPES pH 7.4, 50 mmol/L MgCl2, 0.5 mmol/L MnCl2, 0.2 mmol/L Na3VO4, 1 mmol/L DTT) and incubated for 1 hour at 37°C in 96-well plates precoated with 20 μg/mL Poly(Glu,Tyr)4:1. The plate was incubated with PY99 antibody and then with HRP-conjugated anti-mouse IgG. After reaction with o-phenylenediamine solution and then termination with the addition of 2N H2SO4, absorbance was measured at 490 nm using a Synergy H4 Hybrid reader.
In vivo
Anlotinib decreases vascular density in tumor tissue in vivo. Compared with the well-known tyrosine kinase inhibitor sunitinib, once-daily oral dose of anlotinib shows broader and stronger in vivo antitumor efficacy and, in some models, causes tumor regression in nude mice. It is well-tolerated in mice. Anlotinib is efficacious at doses (1.5‐6 mg/kg daily) that are significantly lower than effective doses of other TKI, which require doses of 20‐100 mg/kg to achieve significant inhibition of tumor growth in mice. In vivo, anlotinib has showed broad activity against human tumor xenograft models of the colon (SW-620), ovarian (SK-OV-3), liver (SMMC-7721), renal (Caki-1), glioma (U87MG), and non-small cell lung (Calu-3) during dosing period. In Sprague-Dawley rats and beagle dogs, anlotinib is rapidly absorbed from the gastrointestinal tracks after oral administration. The oral bioavailability is 23-45 % in rats and 47-74 % in dogs. Anlotinib exhibits large volume of distribution in both species. In rats, primary tissues, such as the lung, kidneys, liver, and heart, exhibit significant higher exposure levels to anlotinib compared with that in plasma. The exposure level in the brain is comparable with the corresponding plasma level. In tumor-bearing mice, anlotinib concentrates 2.4-2.6 times in tumor tissue than in plasma. In human, anlotinib exhibits a quite long t1/2 (96 ± 17 h), which appeared to be dose-independent. The terminal half-life of anlotinib in dogs (22.8±11.0 h) is longer than that in rats (5.1±1.6 h). This difference appeares to be mainly associated with an interspecies difference in total plasma clearance (rats, 5.35±1.31 L/h/kg; dogs, 0.40±0.06 L/h/kg). In human plasma, anlotinib is predominantly bound to albumin and lipoproteins, rather than to α1-acid glycoprotein or γ-globulins.
References

Applications

Methods Biomarkers Images PMID
Western blot TP53 / Cleaved-caspase 3 / Cleaved PARP Beclin-1 / LC3-I / LC3-II Akt / p-Akt / mTOR / p-mTOR
S8726-WB1
30139768
Immunofluorescence LC3-II
S8726-IF1
30755242
Growth inhibition assay Cell viability
S8726-viability1
30755242

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-04-22)

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
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NCT06992336 RECRUITING
Breast Cancer
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
2025-04-10 PHASE2
NCT07156643 NOT_YET_RECRUITING
Locally Advanced Soft Tissue Sarcoma
The First Affiliated Hospital with Nanjing Medical University
2025-10-01 PHASE2
NCT07520760 RECRUITING
HER 2 Negative Breast Cancer
Sun Yat-sen University
2026-04-01 PHASE2
NCT07193186 NOT_YET_RECRUITING
Thyroid Cancer
Fudan University
2026-04-01 PHASE2

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