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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 455915Generated: October 30, 2026

Hydrochloric Acid → HCID 178440328, compound

https://huagongshe.com/reaction/455915

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethanolHCID 887—
ReactantSildenafil CitrateHCID 135413523—
SolventEthanolHCID 702—
ProductHCID 178440328HCID 178440328—

Reaction Steps

Sildenafil citrate (9.5 g) is dissolved in a mixture of ethanol (10 mL) and HCl (1N, 60 mL), then reacted at 50° C. for 10 mins. Under room temperature, the methanol is added for incubating over night and crystallization. Then, the crystal is filtrated to obtain precipitate of Sildenafil HCl (6.4 g) for use.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08497370B2
Source datasetuspto-grants-2013_07
ORD IDord-622e3e675a384c18b597715b8e805b30
Source noteuspto-grants-2013_07