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Sildenafil — Research Liquid
Reference entry for a short-acting PDE5 inhibitor — 30 mg/mL solution, 30 mL bottle
In stock1 format available
€46
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Ask about this listing or request its COAFor laboratory research use only. Sold exclusively for in-vitro laboratory research by qualified professionals. Not for human or veterinary use, and not a medicine, food, cosmetic or dietary supplement. Terms and Conditions
Overview
Key facts
Sildenafil is a selective blocker of phosphodiesterase type 5 (PDE5).
- Storage
- Controlled room temperature, tightly closed and protected from light; do not freeze
- Available size
- 30 mL · 30 mg/mL
For research use only. Not for human consumption.
Sildenafil is a selective blocker of phosphodiesterase type 5 (PDE5). Chemically a pyrazolo[4,3-d]pyrimidinone, it emerged from a Pfizer research programme on angina at the start of the 1990s. It was later authorised under the name Viagra for erectile dysfunction, in 1998, and — at different strengths — under the name Revatio for pulmonary arterial hypertension. We cite these authorisations only as public regulatory facts; they are not a recommendation to use it.
Sildenafil may be supplied only on prescription. This page is part of an institutional and demonstration reference catalogue, and we release material solely against a valid prescription or an institution's documented authorisation. You will find no information on where else to obtain it, how to take it or what dose to use — neither here nor from our staff.
In its free-base form sildenafil is C22H30N6O4S, weighing 474.58 g/mol. Tablets on the market normally contain the citrate salt instead, which is registered under another CAS number and has a higher formula weight. The product described here is an oral solution: 30 mg per millilitre in a 30 mL bottle. Because it is among the most thoroughly understood probes of nitric oxide–cGMP signalling, laboratories also use sildenafil widely as a pharmacological tool in vascular, lung and heart research.
Questions about Sildenafil — Research Liquid
Can it be obtained without a prescription?
No — sildenafil can only be supplied on prescription. This page belongs to an institutional and demonstration reference catalogue; we release the material exclusively against a valid prescription or an institution's documented authorisation and offer no route around that requirement.
What separates sildenafil base from sildenafil citrate?
Sildenafil base (CAS 139755-83-2) weighs 474.58 g/mol. Commercial tablets usually contain sildenafil citrate, which has a CAS number of its own and a greater formula weight. Whenever a concentration is quoted, it should say which of the two forms it means.
Why is one drug authorised for two such different conditions?
Both uses stem from one mechanism: blocking PDE5 extends cGMP signalling and relaxes smooth muscle, which matters in the penile blood vessels and in the pulmonary arteries. The two indications have separate marketing authorisations and different authorised strengths.
Is dosing information provided?
No. How much to give, how to adjust it and how to administer it are questions for the prescriber and the authorised product information in each country. This page limits itself to chemistry, mechanism, regulatory status and storage, and our team gives no advice about use.
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