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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2399005Generated: October 29, 2026

Thiosemicarbazide → HCID 178481319, compound

https://huagongshe.com/reaction/2399005

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThiosemicarbazideHCID 2723789—
ReactantEthyl 1-methyl-5-nitro-1H-imidazole-2-carboximidateHCID 21432269—
CatalystSulfuric AcidHCID 1118—
SolventMethanolHCID 887—
ProductHCID 178481319HCID 178481319—

Reaction Steps

To a stirred mixture of ethyl 1-methyl-5-nitro-2-imidazolecarboximidate (0.198 g., 0.001 mole) and thiosemicarbazide (0.091 g., 0.001 mole) in 5 ml. of methanol is added 1 drop of conc. H2SO4 and the mixture is stirred at room temperature for 50 minutes. The solid is filtered and washed with methanol, yielding 0.149 g. of the title compound, melting point 200°-201° C. dec.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04026903
Source datasetuspto-grants-1977_05
ORD IDord-f8c6d7817d5a4d9a905674142f54b989
Source noteuspto-grants-1977_05