• 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

  • B3458

    Biopterin

    Endogenous pterin coenzyme required for release...

    ≥98%
  • B1973

    Besifloxacin Hydrochloride

    Fluoroquinolone; topoisomerase IV and bacterial...

    ≥98%
  • R2514

    RGDV

    Tretraeptide, binds cell surface integrins.

    ≥98%
  • E6896

    Erysolin

    ITC found in cruciferous vegetables, analog of ...

    ≥97%
  • O7992

    OTX-015

    BRD2/3/4 inhibitor.

    ≥98%
  • G2968

    Growth Hormone Releasing Peptide 2

    Endogenous peptide hormone, involved in growth ...

    ≥95%
  • L3550

    Limonin

    Furanolactone found in citrus fruits.

    ≥98%
  • F7657

    Ftorafur

    5-fluorouracil prodrug, pyrimidine analog; thym...

    ≥99%
  • T0108

    10-Deacetyl-7-xylosyltaxol

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

    ≥98%
  • L0349

    Lamotrigine

    R-type Ca2+ and voltage-gated Na+ channel block...

    ≥98%
  • L3374

    Lisinopril Dihydrate

    Enalapril analog; ACE inhibitor.

    ≥98%
  • T3134

    Thiostrepton

    Thiazole; proteasome inhibitor, protein translo...

    ≥97%, HPLC
  • A6970

    Artemether

    Sesquiterpene lactone derived from Artemesia.

    ≥98%
  • W0275

    R-(+)-Warfarin Sodium >99%ee

    Coumarin; VKORC1 inhibitor.

    ≥99%
  • A7200

    AS-252424

    p110γ PI3K inhibitor, potential TRPC1/5/6 nega...

    ≥98%
  • C179604

    CEP-28122 Mesylate

    ALK inhibitor.

    ≥98%
  • A225822

    Afuresertib

    Inhibitor of Akt.

    ≥98%
  • R1217

    RDEA119

    MEK1/2 inhibitor.

    ≥98%
  • D490280

    DMH-1

    Inhibitor of BMP.

    ≥99%
  • E4785

    Elvitegravir

    Integrase inhibitor.

    ≥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