• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Usnic Acid

Usnic Acid

Product ID U7354
Cas No. 125-46-2
Purity ≥98%
Product Unit SizeCostQuantityStock
5 g $85.20 In stock
25 g $275.60 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Usnic acid is a dibenzofuran initially produced by lichens and exhibits antibacterial, anti-angiogenic, and anticancer chemotherapeutic activities. Usnic acid displays antibiotic activity against Mycobacterium tuberculosis. In lung carcinoma cells, usnic acid induces G0/G1 phase cell cycle arrest, downregulates expression of CDK4, CDK6, and cyclin D1, and upregulates expression of p21, resulting in apoptosis. Usnic acid also inhibits breast cancer tumor growth and angiogenesis in vivo.

Product Info

Cas No.

125-46-2

Purity

≥98%

Formula

C18H16O7

Formula Wt.

344.32

Chemical Name

2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyl-1,3(2H,9bh)- dibenzofurandione

IUPAC Name

2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione

Synonym

Uanic acid, Usninic acid, Usnein

Melting Point

204°C

Solubility

Soluble water (1.1 mg/mL), acetone (7.7 mg/mL), ethyl acetate (0.88 mg/mL) or ethanol.

Appearance

Grey-yellow Powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

U7354 MSDS PDF

Info Sheet

U7354 Info Sheet PDF

References

Singh N, Nambiar D, Kale RK, et al. Usnic acid inhibits growth and induces cell cycle arrest and apoptosis in human lung carcinoma A549 cells. Nutr Cancer. 2013;65 Suppl 1:36-43. PMID: 23682781.

Song Y, Dai F, Zhai D, et al. Usnic acid inhibits breast tumor angiogenesis and growth by suppressing VEGFR2-mediated AKT and ERK1/2 signaling pathways. Angiogenesis. 2012 Sep;15(3):421-32. PMID: 22669534.

Ramos DF, Almeida da Silva PE. Antimycobacterial activity of usnic acid against resistant and susceptible strains of Mycobacterium tuberculosis and non-tuberculous mycobacteria. Pharm Biol. 2010 Mar;48(3):260-3. PMID: 20645810.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • D5612

    2-n-Dodecylfuran

    Furan derivative.

    ≥98%
  • T1605

    Tebuconazole

    Triazole; 14-α demethylase inhibitor, voltage-...

    ≥98%
  • R0248

    Ramatroban

    CRTH2 inhibitor, TxA2 antagonist.

    ≥98%
  • F4583

    Flupirtine Maleate

    Kv7 K+ channel activator, NMDA antagonist, GABA...

    ≥98%
  • T0108

    10-Deacetyl-7-xylosyltaxol

    Taxane found in species of Taxus; potential mic...

    ≥98%
  • S760004

    Stachybotrylactam

    Spirodihydrobenzofuranlactam

    ≥98%
  • G7862

    GTPL-5846

    GPR84 agonist.

    ≥98%
  • R1217

    RDEA119

    MEK1/2 inhibitor.

    ≥98%
  • A5478

    Antipain Dihydrochloride

    Oligopeptide found in Actinomycetes; protease i...

  • A0401

    Abacavir

    Nucleoside (guanosine) analog; RT, guanylyl cyc...

    ≥98%
  • S8047

    R,S-Sulforaphane, Research Grade

    Synthetic ITC.

    ≥97%
  • N0068

    Naringenin

    Flavanone found in species of Citrus. Naringen...

    ≥98%
  • F441026

    Flavopiridol Hydrochloride

    Semisynthetic flavone that acts as an inhibitor...

    ≥98%
  • D3430

    Dihydrosanguinarine

    Benzophenanthridine alkaloid, sanguinarine meta...

    ≥98%
  • B1545

    Benzalkonium Bromide

    Quaternary ammonium cationic surfactant, dissoc...

    ≥95%
  • O4402

    Olaparib

    PARP1/2 inhibitor.

    ≥98%
  • W0273

    R-(+)-Warfarin >99%ee

    Coumarin; VKORC1 inhibitor.

    ≥99%
  • K0276

    Katacalcin

    Peptide found in crustaceans; PKA activator.

    ≥95%
  • A3080

    AHU-377 Tris Salt

    LBQ657 prodrug; neprilysin inhibitor.

    ≥99%
  • I5752

    Ionomycin, Free Acid

    Polyether Ca2+ ionophore.

    ≥98%, TLC, HPLC

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2025 LKT Laboratories, All Rights Reserved - Products for research use only