• 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
Awaiting product image

Letrozole

Product ID L1878
Cas No. 112809-51-5
Purity ≥98%
Product Unit SizeCostQuantityStock
5 mg $55.10 In stock
25 mg $104.80 In stock
50 mg $165.40 In stock
100 mg $286.70 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. TEST!!!!!!

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

  • N3276

    Nitroso(acetoxymethyl)methylamine

    NNK precursor found in tobacco smoke; carcinoge...

    ≥98%
  • N3448

    Nimodipine

    L-type Ca2+ channel blocker.

    ≥98%
  • C1867

    Ceramide

    Endogenous sphingosine-based lipid, component o...

    ≥98%
  • I6804

    Irbesartan

    PPARγ agonist, AT1 inhibitor.

    ≥98%
  • T0116

    2″,3″-Dihydrocephalomannine

    Cephalomannine derivative found in Taxus; poten...

    ≥90%
  • C0167

    Carbenoxolone

    Synthetic glycyrrhetinic acid derivative; 11β-...

    ≥97%
  • O4402

    Olaparib

    PARP1/2 inhibitor.

    ≥98%
  • C0145

    Calcitriol

    Active form of vitamin D, regulates dietary Ca2...

    ≥97%
  • B3203

    Biapenem

    β-lactam; penicillin binding protein inhibitor...

    ≥98%
  • O486179

    Omeprazole Impurity C

    ≥99%
  • R0105

    Rabeprazole Sodium

    H+/K+ ATPase and Scpc phosphatase inhibitor.

    ≥98%
  • I544766

    Intepirdine

    Selective 5-HT6 receptor antagonist

    ≥98%
  • S5868

    Sorafenib

    c-Raf, Ret, VEGFR2 inhibitor, potential STAT3/5...

    ≥98%
  • M4455

    MLN-2238

    Proteasome inhibitor, miR33b modulator.

    ≥98%
  • I7360

    Isosorbide Mononitrate

    NO donor.

    ≥98%
  • C2968

    Chrysin

    Flavone found in Passiflora, Oroxylum, and Pleu...

    ≥98%
  • A5217

    trans-Anethole

    Phenylpropene derivative found in essential oil...

    ≥98%
  • B4402

    Blasticidin S Hydrochloride

    Protein translation inhibitor.

    ≥98%
  • A4438

    Allatostatin I

    Neuropeptide found in insects; juvenile hormone...

    ≥95%
  • W894440

    WWL70

    ABHD6 inhibitor.

    ≥95%

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