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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 497924Generated: November 1, 2026

Malic Acid → HCID 178507297, compound

https://huagongshe.com/reaction/497924

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMalic AcidHCID 525—
ReactantSulfuric AcidHCID 1118—
Reactant2,6-DiaminopyridineHCID 8861—
ProductHCID 178507297HCID 178507297—

Reaction Steps

In step 1 of the method, commercially available 2,6-diaminopyridine (e.g., Aldrich, Milwaukee, Wis.) is reacted with malic acid in sulfuric acid to provide 2-amino-7-hydroxy-1,8-naphthyridine sulfuric acid salt. It is noted that 2-amino-7-hydroxy-1,8-naphthyridine free base is described in S. Carboni et al., Gazz. Chim. Ital., 95, 1498 (1965).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06949653B2
Source datasetuspto-grants-2005_09
ORD IDord-a2fcc1d053fd4f4d88c5eaad0c55e964
Source noteuspto-grants-2005_09