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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1676937Generated: October 25, 2026

Formaldehyde → 2-chloro-5-[1-(hydroxymethyl)-1H-tetrazol-5-yl]-4-[(2-thienylmethyl)amino]benzenesulfonamide

https://huagongshe.com/reaction/1676937

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantAzosemideHCID 2273—
ReactantDimethylformamideHCID 6228—
SolventDichloromethaneHCID 6344—
Solventdichloromethane N,N-dimethylformamideHCID 22350042—
Product2-chloro-5-[1-(hydroxymethyl)-1H-tetrazol-5-yl]-4-[(2-thienylmethyl)amino]benzenesulfonamideHCID 60208423—

Reaction Steps

Azosemide can be reacted with formaldehyde in methylene chloride, methylene chloride-DMF mixtures or DMF to yield 2-chloro-5-[1-(hydroxymethyl)-1H-tetrazol-5-yl]-4-[(2-thienylmethyl)amino]benzenesulfonamide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08008283B2
Source datasetuspto-grants-2011_08
ORD IDord-a146fbe8f33c4cf195e212234ae04faa
Source noteuspto-grants-2011_08