Exemestane in bulk supply 107868-30-4 global trade Hot Sale 107868-30-4

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Exemestane in bulk supply global trade Hot Sale 107868-30-4

Exemestane is an irreversible steroid aromatase inhibitor. Its structure is similar to that of aromatase’s natural substrate, androstenedione, and acts as a pseudosubstrate. Postmenopausal women’s estrogen is mainly converted from androgen (produced by the adrenal cortex) by aromatase in the surrounding tissue. This drug irreversibly binds with the active site on aromatase to deactivate it, thus dramatically lower estrogen levels in the blood circulation of postmenopausal women. By inhibiting aromatase to lower estrogen levels, it can be used to treat hormone-dependent breast cancer in postmenopausal women.
Exemestane is suitable for treating advanced breast cancer in naturally or artificially postmenopausal women that has not responded well to tamoxifen treatment. It is also suitable for treating estrogen and progesterone receptor positive postmenopausal advanced breast cancer, and it can also be used to treat metastasized breast cancer and as adjuvant therapy for early breast cancer.

Exemestane is a steroidal irreversible CYP19 (aromatase) inhibitor. Exemestane is structurally related to natural androstenedione and acts as a false CYP19 enzyme substrate. This effect is also known as "suicide inhibition". Exemestane has been found to inhibit human placental CYP19