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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2198679Generated: October 30, 2026

3-Nitrobenzoic acid → Carnosine

https://huagongshe.com/reaction/2198679

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Nitrobenzoic acidHCID 8497—
ReactantTetramethylammonium hydroxideHCID 60966—
Reactant1,3-thiazinane-2,4-dioneHCID 2304067—
ReactantHCID 178419078HCID 178419078—
ProductCarnosineHCID 439224—

Reaction Steps

Following the procedure of Example 1, 1.55 g. (10 mmol) of L-histidine and 2.62 g. (20 mmol) of tetrahydro-1,3-thiazin-2,4-dione are reacted, using 40% aqueous tetramethylammonium hydroxide solution to raise pH and m-nitrobenzoic acid to lower pH, to give L-carnosine in good yield.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04359416
Source datasetuspto-grants-1982_11
ORD IDord-d96d20c8a1134f2a9462773eee4b1b94
Source noteuspto-grants-1982_11