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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 461011Generated: October 30, 2026

Formaldehyde → HCID 23455198, compound

https://huagongshe.com/reaction/461011

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantTheophyllineHCID 2153—
ReactantPyridinium chlorideHCID 10176127—
ProductHCID 23455198HCID 2345519878.2%

Reaction Steps

A suspension of 3.60 g (0.02 mole) of theophylline, 2.30 g (0.02 mole) of pyridine hydrochloride and 0.7 g (0.023 mole) of paraformaldehyde was heated at 80° for 24 hr. Upon cooling, crystals immediately formed in the solution. The crystals were filtered and dried in vacuo to give 4.83 g (28% yield) of the desired compound as its hydrate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04061753
Source datasetuspto-grants-1977_12
ORD IDord-09a9bf2ad8f542c58e4a6927355828e6
Source noteuspto-grants-1977_12