Onye nrụpụta China Hexamethylenetetramine HMTA Urotropine Ọnụahịa asọmpi,
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Urotropine, nke a makwaara dịka Hexamethylenetetramine/Hexamine, usoro molekul C₆H₁₂N₄. Ngwaahịa anyị nwere obere mmiri mmiri, ịdị ọcha dị elu na arụmọrụ kwụsiri ike. A na-etinye ya nke ọma na ihe na-eme ka resin sie ike, ihe na-eme ka roba sie ike, imecha ákwà, ihe mgbochi nchara ígwè na ọgwụ. Dịka ọkachamara n'ihe gbasara mmepụta China, anyị na-enye ngwaahịa na-adịgide adịgide, ọnụ ahịa asọmpi na akwụkwọ COA zuru oke maka ndị na-azụ ahịa si mba ofesi.