• 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
Letrozole

Letrozole

Product ID L1878
Cas No. 112809-51-5
Purity ≥98%
Product Unit SizeCostQuantityStock
5 mg $75.00 In stock
25 mg $143.00 In stock
50 mg $225.00 In stock
100 mg $391.00 In stock
Bulk Quote

Quicklinks

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

Description

Letrozole is an inhibitor of aromatase that prevents the formation of estrogens; it is clinically used to treat hormone-responsive breast cancer and infertility and to terminate pregnancy. Letrozole exhibits anticancer chemotherapeutic and anti-estrogenic activities. In vivo, letrozole increases secretion of luteinizing hormone (LH), lengthens the follicular dominance period, and delays subsequent follicular waves.

Product Info

Cas No.

112809-51-5

Purity

≥98%

Formula

C17H11N5

Formula Wt.

285.30

Chemical Name

4,4'-(1H-1,2,4-Triazol-1-ylmethylene)bisbenzonitrile

IUPAC Name

4-[(4-cyanophenyl)-(1,2,4-triazol-1-yl)methyl]benzonitrile

Synonym

Femara

Melting Point

181-183°C

Solubility

Soluble in dichloromethane, DMSO (100 mM). Slightly soluble in ethanol. practically insoluble in water. Soluble in chloroform, methanol.

Appearance

White Crystal Powder

Shipping and Storage

Store Temp

-20°C

Ship Temp

Ambient

Downloads

MSDS

L1878 MSDS PDF

Info Sheet

L1878 Info Sheet PDF

References

Lee VC, Gao J, Lee KF, et al. The effect of letrozole with misoprostol for medical termination of pregnancy on the expression of steroid receptors in the placenta. Hum Reprod. 2013 Nov;28(11):2912-9. PMID: 23980056.

Tomao F, Spinelli G, Vici P, et al. Current role and safety profile of aromatase inhibitors in early breast cancer. Expert Rev Anticancer Ther. 2011 Aug;11(8):1253-63. PMID: 21916579.

Yapura J, Mapletoft RJ, Pierson R, et al. A bovine model for examining the effects of an aromatase inhibitor on ovarian function in women. Fertil Steril. 2011 Aug;96(2):434-438.e3. PMID: 21696721.

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

  • G7443

    GSK-429286A

    ROCK1/2 inhibitor, potential RSK and p70S6K inh...

    ≥98%
  • S0224

    SAG

    Smoothened agonist.

    ≥98%
  • C6982

    Crustacean Cardioactive Peptide

    Neuropeptide hormone found in arthropods.

    ≥95%
  • A1333

    Adipokinetic Hormone II from Schistocera gregaria

    Neuropeptide found in Schistocera gregaria.

    ≥95%
  • A971334

    Azilsartan

    Sartan

    ≥98%
  • A1017

    Aceclofenac

    Diclofenac analog, NSAID; COX-2 inhibitor.

    ≥98%
  • U6802

    Urapidil Hydrochloride

    5-HT1A agonist, α1-adrenergic antagonist.

    ≥98%
  • Z324098

    Ziconotide

    Non-opioid analgesic.

    ≥95%
  • O9458

    Oxolinic Acid

    Fluoroquinolone; bacterial DNA gyrase inhibitor...

    ≥98%
  • A7604

    ATB 346

    NSAID; COX inhibitor and HS-releasing agent.

    ≥99%
  • K0133

    Kainic Acid

    Excitatory amino acid found in seaweed; AMPA an...

    ≥98%
  • G5216

    GNE-7915

    LRRK2 inhibitor.

    ≥98%
  • A7868

    Atropine

    Tropane alkaloid found in plants in the Solanac...

    ≥98%
  • F5870

    N-formyl-Met-Leu-Phe

    Peptide, involved in neutrophil activation; FPR...

    ≥95%
  • B0397

    BAY80-6946 Hydrochloride

    pan-PI3K inhibitor

    ≥98%
  • G4797

    GLYX-13 Trifluoroacetate

    Peptide; NMDA partial agonist.

    ≥98%
  • T0096

    Cephalomannine

    Diterpene found in Taxus; potential microtubule...

    ≥98%
  • A4400

    Alamethicin

    Antimicrobial peptide found in Trichoderma, ind...

    ≥95%
  • G4434

    Gliotoxin

    Toxin produced by Aspergillus.

    ≥98%
  • B1769

    Bergenin

    Trihydroxybenzoic acid glycoside found in Berge...

    ≥98%

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

©2026 LKT Laboratories, All Rights Reserved - Products for research use only