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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2194853Generated: October 26, 2026

Phosphoric Acid → Tamiflu

https://huagongshe.com/reaction/2194853

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphoric AcidHCID 1004—
ReactantOseltamivirHCID 65028—
ProductTamifluHCID 78000—

Reaction Steps

Form B may be formed by adding (3R,4R,5S)-4-acetylamino-5-amino-3-(1-ethyl-propoxy)-cyclohex-1-enecarboxylic acid ethyl ester to the phosphoric acid and cooling the supersaturated solution from 50° C. to −40° C. as fast as possible (without seeding).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08334319B2
Source datasetuspto-grants-2012_12
ORD IDord-0c10069f60fc4ba9a6e569cad3915ad6
Source noteuspto-grants-2012_12