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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1895504Generated: October 31, 2026

Citric Acid → Trisodium citrate

https://huagongshe.com/reaction/1895504

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCitric AcidHCID 311—
ReactantWaterHCID 962—
ReactantPotassium CarbonateHCID 11430—
ReactantDuloxetineHCID 60835—
ReactantSodium BicarbonateHCID 516892—
ProductTrisodium citrateHCID 6224—
ProductTripotassium citrateHCID 13344—
ProductDuloxetineHCID 60835—

Reaction Steps

Effervescent Tablets and Granules were prepared using standards techniques known to persons skilled in the art. For Example: From one 20 mg duloxetine capsule, granules were emptied into mortar and pestle to prepare fine powder. A homogeneous mixture of effervescent duloxetine powder was obtained by diluting the above powdered duloxetine with about 958 mg sodium bicarbonate USP, about 832 mg citric acid USP and about 312 mg potassium carbonate USP. This powder reacted with the 60 ml water to create effervescence resulting in a bubbling solution of duloxetine with sodium citrate and potassium citrate as principal antacids

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08513439B2
Source datasetuspto-grants-2013_08
ORD IDord-bc3b3517f1f84f3da7362b800af2f088
Source noteuspto-grants-2013_08