AB-680 ammonium
Based on 23 publication(s) in Google Scholar
AB-680 ammonium is a highly potent, reversible and selective inhibitor of CD73 (an ecto-nucleotidase), with a Ki of 4.9 pM for hCD73, displays >10,000-fold selectivity over related ecto-nucleotidases CD39. Anti-tumor activity.
For research use only. We do not sell to patients.
- Formula: C20H30ClFN6O9P2
- Molecular Weight:614.89
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) AB-680 ammonium
More- Cancer Res. 2025 Apr 15.
- Cancer Res. 2025 Feb 17;85(4):692-703. [Abstract]
- Nat Commun. 2026 Feb 12;17(1):1214. [Abstract]
- Nat Commun. 2023 Jun 8;14(1):3364. [Abstract]
- Adv Sci (Weinh). 2023 Nov;10(33):e2302498. [Abstract]
- J Immunother Cancer. 2021 Jul;9(7):e002503. [Abstract]
- Cell Death Dis. 2025 Aug 4;16(1):587. [Abstract]
- Acta Pharmacol Sin. 2025 Jun 11. [Abstract]
- Cancer Immunol Res. 2023 Jan 3;11(1):56-71. [Abstract]
- NPJ Precis Oncol. 2025 Nov 18;9(1):358. [Abstract]
- Biomed Pharmacother. 2025 May 26:188:118188. [Abstract]
- Cell Rep. 2025 Nov 25;44(12):116623. [Abstract]
- Sci Signal. 2026 Mar 3;19(927):eadz6443. [Abstract]
- Front Immunol. 2022 Nov 21:13:1026994. [Abstract]
- Front Immunol. 2022 Oct 4:13:946871. [Abstract]
- Cells. 2024 Jun 29;13(13):1128. [Abstract]
- Front Pharmacol. 2026 Feb 12:17:1745656. [Abstract]
- J Cancer Res Clin Oncol. 2024 Jul 13;150(7):348. [Abstract]
- bioRxiv. 2026 Apr 8:2026.04.05.713683. [Abstract]
- Res Sq. 2026 Mar 5.
- bioRxiv. 2025 Jul 26:2025.07.22.666143. [Abstract]
- bioRxiv. 2023 Nov 1.
- Research Square Preprint. 2021 Mar.
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ELISA
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Bio/Physico-chemical Assay
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In Vivo Efficacy Study
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Histological Imaging/Staining
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IHC
Biological Activity
Ki: 4.9 pM (hCD73)[1]
AB-680 ammonium inhibits soluble hCD73 with an IC50 of 0.043 nM, also inhibits hCD73 in CHO cells, suppresses CD73 in human, mouse CD8+ T Cells and hPBMC, with IC50s of 0.070, 0.008, 0.66 and 0.011 nM, respectively[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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Molecular Weight 614.89
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Formula C20H30ClFN6O9P2
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SMILES
O=P(CP(O)([O-])=O)([O-])OC[C@@H]1[C@@H](O)[C@@H](O)[C@H](N2C(N=C(Cl)C=C3N[C@H](C4=CC=CC=C4F)C)=C3C=N2)O1.[NH4+].[NH4+]
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications (23)
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Journal Impact Factor
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Most Recent
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Cancer Res
Adenosine Uptake through the Nucleoside Transporter ENT1 Suppresses Antitumor Immunity and T-cell Pyrimidine Synthesis. [Abstract]2025 Feb 17;85(4):692-703. PMID: 39652568
AB-680 ammonium purchased from MedChemExpress. Usage Cited in: Cancer Res. 2025 Feb 17;85(4):692-703. [Abstract]
IFNγ levels measured by ELISA in supernatant of NY-ESO/624mel cultures exposed to AMP (300 μmol/L) with or without AB-680 (0.5 μmol/L) for 24 hous.
AB-680 ammonium purchased from MedChemExpress. Usage Cited in: Cancer Res. 2025 Feb 17;85(4):692-703. [Abstract]
Percentage of labeled (M + 5) ADO and AMP out of total intracellular adenosine (ADO) in activated (1 ng/mL αCD3) NY-ESO-1–specific T cells exposed to isotopically labeled 15N5-AMP for 3 hours in presence or not of either AB-680 (0.5 μmol/L).
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Nat Commun
Human iPSC-based Modeling of Pulmonary Fibrosis Reveals p300/CBP Inhibition Suppresses Alveolar Transitional Cell State. [Abstract]2026 Feb 12;17(1):1214. PMID: 41680175 -
Nat Commun
Transcriptional control of pancreatic cancer immunosuppression by metabolic enzyme CD73 in a tumor-autonomous and -autocrine manner. [Abstract]2023 Jun 8;14(1):3364. PMID: 37291128 -
Adv Sci (Weinh)
Tumor Microenvironment Responsive CD8+ T Cells and Myeloid-Derived Suppressor Cells to Trigger CD73 Inhibitor AB680-Based Synergistic Therapy for Pancreatic Cancer. [Abstract]2023 Nov;10(33):e2302498. PMID: 37867243
AB-680 ammonium purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2023 Nov;10(33):e2302498. [Abstract]
Image, volumes, and weights of the AB-680 (20 mg/kg; i.p.; once weekly for 3 weeks)‐treated versus Control KPC subcutaneous allografts (n = 6 samples per group).
AB-680 ammonium purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2023 Nov;10(33):e2302498. [Abstract]
Representative images of H&E staining, Masson's trichrome staining (MTS), and immunohistochemistry staining of CD8, Granzyme B, α‐SMA. Scale bar: 200 µm. The results showed that AB-680 (20 mg/kg; i.p.; once weekly for 3 weeks) significantly increased the numbers of CD8+ and Granzyme B+ cells.
AB-680 ammonium purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2023 Nov;10(33):e2302498. [Abstract]
Representative images of immunohistochemistry staining of CXCL5 and CXCR2 in the KPC tumors from the indicated treatment groups. The results showed that AB-680 (20 mg/kg, i.p.; once weekly) also increased the percentage of the corresponding receptor CXCR2+ area in treated tumors.
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J Immunother Cancer
Single-cell RNA sequencing reveals distinct cellular factors for response to immunotherapy targeting CD73 and PD-1 in colorectal cancer. [Abstract]2021 Jul;9(7):e002503. PMID: 34253638 -
Cell Death Dis
P2X7 a new therapeutic target to block vesicle-dependent metastasis in colon carcinoma: Role of the A2A/CD39/CD73 axis. [Abstract]2025 Aug 4;16(1):587. PMID: 40759630 -
Acta Pharmacol Sin
CD73 inhibitor AB680 suppresses glioblastoma in mice by inhibiting purine metabolism and promoting P2RY12+ microglia transformation. [Abstract]2025 Jun 11. PMID: 40500344 -
Cancer Immunol Res
2023 Jan 3;11(1):56-71. PMID: 36409930 -
NPJ Precis Oncol
Metabolomic and transcriptomic profiling of HNSCC identifies AMIGO2 as a therapeutic target modulating tumor microenvironment. [Abstract]2025 Nov 18;9(1):358. PMID: 41254143 -
Biomed Pharmacother
Co-targeting the CD73-adenosinergic axis enhances the anti-tumor efficacy of anti-PD-L1 immunotherapy in bladder cancer. [Abstract]2025 May 26:188:118188. PMID: 40424822 -
Cell Rep
Fatty acids modulate the colorectal cancer immune microenvironment via regulating the interaction and transactivation of PPARα/δ and P53. [Abstract]2025 Nov 25;44(12):116623. PMID: 41296567 -
Sci Signal
Glucose metabolism sustains aberrant STAT3 signaling in colorectal cancer through glycosylated local signaling factors. [Abstract]2026 Mar 3;19(927):eadz6443. PMID: 41774818 -
Front Immunol
Human gut microbiota-reactive DP8α regulatory T cells, signature and related emerging functions. [Abstract]2022 Nov 21:13:1026994. PMID: 36479125 -
Front Immunol
CD38+CD39+ NK cells associate with HIV disease progression and negatively regulate T cell proliferation. [Abstract]2022 Oct 4:13:946871. PMID: 36268017 -
Cells
Inhibition of Vascular Smooth Muscle Cell Proliferation by ENPP1: The Role of CD73 and the Adenosine Signaling Axis. [Abstract]2024 Jun 29;13(13):1128. PMID: 38994980 -
Front Pharmacol
ACT001 synergizes with temozolomide-based chemoradiotherapy to cure refractory glioblastoma by targeting TNF-CXCL10-CD8+ T-cell immunity. [Abstract]2026 Feb 12:17:1745656. PMID: 41769685 -
J Cancer Res Clin Oncol
Targeting CD73 limits tumor progression and enhances anti-tumor activity of anti-PD-1 therapy in intrahepatic cholangiocarcinoma. [Abstract]2024 Jul 13;150(7):348. PMID: 39002018 -
bioRxiv
Serial Thermal Ablation Induces Abscopal Antitumor Immunity and Reveals Targetable CSF1R-Dependent Resistance in Pancreatic Cancer. [Abstract]2026 Apr 8:2026.04.05.713683. PMID: 41993287 -
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bioRxiv
Glucose Metabolism Sustains Aberrant STAT3 Signaling in Colorectal Cancer via Glycosylated Paracrine Factors. [Abstract]2025 Jul 26:2025.07.22.666143. PMID: 40777356 -
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Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)