• 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 $75.10 In stock
25 mg $142.80 In stock
50 mg $225.40 In stock
100 mg $390.70 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.

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

  • S8005

    Substance P

    Endogenous tachykinin peptide, involved in infl...

    ≥95%
  • A0933

    Acitretin

    Retinoid; RARα/β/γ agonist.

    ≥98%, multiple isomers
  • I5315

    Indomethacin

    NSAID; COX-1/2 inhibitor.

    ≥98%
  • C864760

    CVT-313

    Selective CDK2 inhibitor.

    ≥98%
  • M1566

    (+)-S-Methyl-L-cysteine-S-oxide

    Alliin analog found in cruciferous vegetables.<...

    ≥98%
  • C4658

    Clopidogrel Sulfate

    Thienopyridine; P2Y12 antagonist.

    ≥98%
  • E7378

    Estrone

    Endogenous steroid hormone, estriol precursor; ...

    ≥97%
  • G4400

    Glabridin

    Isoflavonoid found in Glycyrrhiza; GABA-A posit...

    ≥98%
  • A0902

    N-Acetyl-S-(N′-phenylhexylthiocarbamoyl)-L-cysteine

    Cysteine-ITC conjugate, antioxidant; HDAC inhib...

    ≥98%
  • C1629

    Cefoperazone Acid

    β-lactam cephalosporin; penicillin binding pro...

    ≥98%
  • P3076

    PHT-427

    PDK1 and Akt inhibitor.

    ≥98%
  • K1776

    Ketotifen Fumarate

    H1 histamine and LT antagonist, PDE inhibitor.<...

    ≥98%
  • P2400

    Phenethyl Caffeate

    Found in propolis; 5-lipoxygenase inhibitor.

    ≥98%
  • M0273

    Mastoparan 8

    Antimicrobial peptide found in bee and wasp ven...

    ≥95%
  • O486180

    Omeprazole Related Compound A

    Impurity of omeprazole

    ≥99%
  • SB5776

    Snake venom – Bothrops alternatus (urutu)

    Snake venom found in Bothrops alternatus urutu....

    ≥98%
  • C4535

    Clinafloxacin Hydrochloride

    Fluoroquinolone; topoisomerase IV and bacterial...

    ≥98%
  • R3010

    Recombinant Tp-chimeric protein

    Recombinant chimeric protein containing Trepone...

    ≥95%
  • P0268

    Parasin I

    Histone H2-derived antimicrobial peptide found ...

    ≥95%
  • C104761

    CCT-196969

    pan-Raf 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

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