Description
Exemestane tablets at 25 mg per sugar-coated tablet, supplied in bottles of 30. This is the pharmaceutical presentation of a steroidal irreversible aromatase inactivator, and 25 mg is the sole approved strength. Approved and marketed as a generic in the United States, not a controlled substance. Research use only, not for human consumption, adults 21 and over, with purchase restrictions by state.
Container and content
| Compound | Exemestane |
|---|---|
| Content per unit | 25 mg |
| Dosage form | Sugar-coated tablet |
| Units per container | 30 |
| Total content | 750 mg |
| Approved strengths | 25 mg only |
| Controlled substance status | Not scheduled |
| US status | Approved, generic available |
| Sold as | Exemestane tablets, research use only |
A sugar coat is thicker and heavier than a film coat, so a unit of exemestane tablets weighs appreciably more than the 25 mg it contains. Tablet weight and active content are different measurements and the certificate reports the second.
We shelve exemestane tablets with the other ancillaries, under anabolic reference materials.
What is inside exemestane tablets
6-methylenandrosta-1,4-diene-3,17-dione, molecular mass near 296.4. The exocyclic methylene at carbon 6 is the structural feature that distinguishes it, and the compound is poorly soluble in water and lipophilic, which is ordinary for a steroid of this size.
For a coated tablet the assay method has to account for the coat: the unit is dissolved and the active extracted before the chromatography runs. The method reference on the certificate names the procedure, and the purity figure is reported against the extracted material rather than the whole tablet.
Milligrams and the derived price
Thirty tablets at 25 mg is 750 mg. At $95 that is about $0.127 per milligram. The lab-grade carton of the same compound and the same content sits lower, and both figures are printed where they can be compared rather than explained away.
Price per milligram beats the price on the bottle and why we publish the batch that failed are the two pieces that describe how we handle numbers that do not flatter us.
Status under United States law
Approved, marketed, generically available and not a controlled substance. That applies to exemestane tablets and to the rest of the ancillary group, and it is a materially different position from the unapproved and withdrawn compounds elsewhere in this catalogue. Approval and labelling records are published through the FDA’s drug approvals and databases and DailyMed.
The assay, and the lots that fail it
Every lot of exemestane tablets is assayed before it is listed. HPLC returns purity as a percentage of total peak area, mass spectrometry confirms identity against the expected mass, and residual solvents are reported in parts per million. A lot assaying below its stated milligram content is withdrawn from sale, and its certificate stays on the results page with the rest of them, because a results page carrying nothing but passes tells you nothing about the ones that did not pass. The figure published is the figure the assay returned, not a rounded version of it.
Why we publish the batch that failed is the longer version of that argument, and our certificate guide covers the fields.
Packaging notes
We ship exemestane tablets in the original sealed container with the lot number legible. We do not decant, relabel or combine lots, because a reference material whose lot cannot be named is no longer a reference material. The listing for exemestane tablets states the storage conditions and the stability window we are willing to stand behind. Nothing is supplied in unmarked packaging, and we will not omit the compound name from a label or a customs declaration.
Declined on request
No quantities, no protocols, no sequencing, no potency rankings, no physiological description of this compound. If you ask us by email, the answer is the same as the answer on the page, which is that we do not supply it.
Keeping this listing to specifications is what makes the specifications worth anything. Research use only is not a legal strategy, and the FDA has said so in writing explains how the agency reads pages that go further, and the FDA’s drug information section holds the source documents.
Research use only. Not for human consumption. Adults 21 and over, purchase restrictions by state, both stated on the listing for this item and enforced at checkout. Not a drug, not a dietary supplement, not a food. The lot certificate for this item and the full archive, failures included, are published on the lab results page.
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