1. Signaling Pathways
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  3. Aromatase


Aromatase (estrogen synthetase, CYP19) is a unique cytochrome P450 that catalyzes the removal of the 19-methyl group and aromatization of the A-ring of androgens for the synthesis of estrogens. All human estrogens are synthesized via this enzymatic aromatization pathway. Aromatase is most widely known for its roles in reproduction and reproductive system diseases, and as a target for inhibitor therapy in estrogen-sensitive diseases including cancer, endometriosis, and leiomyoma.

The selective inhibition of estrogen production by aromatase inhibitors is an efficient strategy for breast cancer treatment. These compounds are classified as irreversible inhibitors of aromatase (type I), and comprise steroidal compounds. Reversible inhibitors of aromatase, which comprises non-steroidal compounds are type II aromatase inhibitors. Second and third generation aromatase inhibitors are considerably more potent and more specific in their ability to inhibit aromatase, as compared with first generation compounds (aminoglutethimide).

Aromatase Related Products (13):

Cat. No. Product Name Effect Purity
  • HY-14248
    Letrozole Inhibitor 99.92%
    Letrozole (CGS 20267) is a potent, selective, reversible and orally active non-steroidal inhibitor of aromatase, with an IC50 of 11.5 nM. Letrozole selective inhibits estrogen biosynthesis, and can be used for the research of breast cancer.
  • HY-14274
    Anastrozole Inhibitor 99.99%
    Anastrozole is a potent, highly selective aromatase inhibitor, which inhibits human placental aromatase with an IC50 of 15 nM.
  • HY-13632
    Exemestane Inhibitor 99.95%
    Exemestane (FCE 24304) is a selective, irreversible and orally active steroidal aromatase inhibitor with IC50s of 30 nM and 40 nM for human placental and rat ovarian aromatase, respectively. Exemestane can be used for hormone-dependent breast cancer research.
  • HY-18719B
    Endoxifen hydrochloride ≥98.0%
    Endoxifen hydrochloride is a key active metabolite of Tamoxifen (TAM) with higher affinity and specificity to estrogen receptor that also inhibits aromatase activity. Endoxifen hydrochloride has the potential for breast cancer study.
  • HY-N0292
    Oleuropein Inhibitor 98.54%
    Oleuropein, found in olive leaves and oil, exerts antioxidant, anti-inflammatory and anti-atherogenic effects through direct inhibition of PPARγ transcriptional activity. Oleuropein induces apoptosis in breast cancer cells via the p53-dependent pathway and through the regulation of Bax and Bcl2 genes. Oleuropein also inhibits aromatase.
  • HY-N8405
    Isolimonexic acid Inhibitor
    Isolimonexic acid is a limonoid isolated from lemon (Citrus lemon L. Burm) seed, has anti-cancer and anti-aromatase (IC50=25.60 μM) properties.
  • HY-14247A
    Fadrozole Inhibitor 99.69%
    Fadrozole (CGS 16949A free base) is a potent, selective and nonsteroidal inhibitor of aromatase with an IC50 of 6.4 nM.
  • HY-14247
    Fadrozole hydrochloride Inhibitor 99.64%
    Fadrozole hydrochloride (CGS 16949A) is a potent, selective and nonsteroidal inhibitor of aromatase with an IC50 of 6.4 nM.
  • HY-125833
    Alpha-Naphthoflavone Inhibitor 98.02%
    Alpha-Naphthoflavone is a synthetic flavonoid, acts as a potent and competitive aromatase inhibitor with an IC50 and a Ki of 0.5 and 0.2 μM, respectively.
  • HY-N7128
    Flavanone Inhibitor 99.94%
    Flavanone is a naturally occurring flavone. Flavanone has inhibitory activity for human estrogen synthetase (aromatase).
  • HY-18719E
    Endoxifen is a key active metabolite of tamoxifen (TAM) with higher affinity and specificity to estrogen receptor that also inhibits aromatase activity. Endoxifen has the potential for breast cancer study.
  • HY-136092
    Androsta-1,4,6-triene-3,17-dione Inhibitor
    Androsta-1,4,6-triene-3,17-dione is a lipophilic and specific aromatase inhibitor with a Ki of 0.18 μM. Androsta-1,4,6-triene-3,17-dione inhibits estrogen biosynthesis and shows antifertility effects. Androsta-1,4,6-triene-3,17-dione induces impairment of spatial memory.
  • HY-U00176
    Org30958 Inhibitor
    Org30958 is a potent aromatase inhibitor in vivo.
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