Aromasin 25mg Tablets | 100-Count | Exemestane | Aromatase Inhibitor

QSC Aromasin (Exemestane (steroidal aromatase inhibitor — irreversible)) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
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SKU: QSC-AROMASIN-25MG-100TAB
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS1-Region Domestic Shipping

What is Aromasin?

Exemestane (Aromasin) is a steroidal Type I aromatase inhibitor — irreversible “suicide” inhibitor of CYP19A1. Binds the aromatase active site permanently until new enzyme is synthesised. Mechanistically distinct from reversible Type II AIs (letrozole, anastrozole). Research: permanent enzyme inactivation kinetics, hormone-sensitive cancer. CAS 107868-30-4.

Research Applications

Irreversible CYP19A1 Inhibition

Suicide aromatase inhibitor — permanent enzyme depletion kinetics

Type I vs Type II AI

Steroidal irreversible vs non-steroidal reversible — mechanism comparison

Estrogen Suppression

Complete oestradiol suppression — hormone-sensitive cancer models

Enzyme Kinetics

Irreversible inhibitor kinetics — Km/Vmax with substrate turnover

Male Aromatase Research

T:E2 ratio manipulation — aromatase excess syndrome

Quick Specs

Form Tablet — 25mg per tablet, 100-tablet bottle
CAS Number 107868-30-4
Molecular Formula C₂₀H₂₄O₂
Molecular Weight 296.4 g/mol
Compound Type SERM / Aromatase Inhibitor
Purity ≥99% by HPLC — every batch
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house synthesis — Qingdao, China
Storage Room temperature sealed | cool, dry storage
Shelf Life 24 months unopened

Certificate of Analysis (COA)

Frequently Asked Questions

How are QSC research tablets supplied?
QSC research tablets are supplied as pre-dosed oral tablets at the stated concentration. No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications.
How should research tablets be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight. Keep in the original container. Properly stored tablets remain stable for 2–3 years.
What purity are QSC research tablets and how is it verified?
QSC research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA
🧬 PubMed Research — 25mg
Search PubMed ↗
1,028 publications found Last 10 years 3 most recent shown

Showing 3 of 1,028 for 25mg

View all on PubMed ↗

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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