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Letrozole API

Name of Product Letrozole
CAS No 112809-51-5
Therapeutic use:- Anti Cancer
Grade BP/USP
Form:- API Powder
Status Commercial
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Product Overview

Letrozole is a small-molecule active pharmaceutical ingredient (API) from the triazole class. It is not a steroid. It functions by inhibiting an enzyme which converts androgen to estrogen. This leads to a decrease in the conversion of androgen to estrogen. Because it can lower estrogen levels, companies use letrozole as an API in hormone-related and cancer product lines.

Therapeutic Applications

It is used as an active pharmaceutical ingredient in solid dosage forms. These finished products are placed in the oncology and hormone-related women’s health areas. At the product level, letrozole is classed as an aromatase inhibitor. The exact use, strength, dose, and treatment plan are set by the finished-product company and must follow local rules and approved labels. At the API stage, the focus is on safe manufacture, stable quality, and good technical fit for these authorised products.

Specification Parameters

  • CAS Number: 112809-51-5

  • Chemical Name: 4,4′-(1H-1,2,4-Triazol-1-ylmethylene)dibenzonitrile (letrozole)

  • Molecular Formula: C₁₇H₁₁N₅

  • Molecular Weight: about 285.3 g/mol

  • Appearance: White to pale yellow crystalline powder

  • Solubility: Practically insoluble in water.

  • Purity (HPLC): Not less than 99.0 % (API grade, with limits for single and total related substances)

  • Residue on Ignition / Sulfated Ash: Within the agreed limit

Packaging & Storage

Letrozole is packed in containers that block light. This helps keep the API stable. The usual packs are high-density polyethylene bottles or drums. It may also be packed in fibre drums fitted with inner plastic or foil liners. The label on each pack lists the product name, batch number, filled Weight, manufacturing date, and the retest or expiry date. The API should be kept in a cool and dry area, away from heat, damp conditions, and strong light. The container must be kept tightly closed when it is not in use.

Why Choose Us

We provide letrozole with consistent quality and minimal impurities. We employ fixed and validated test procedures to satisfy API and GMP requirements. You will get proper batch documents, such as CoA, SDS, and basic technical information. We can offer pack sizes for laboratory use, pilot scale, and production. Our staff will answer technical and commercial inquiries in straightforward terms.