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C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
C07C273/1872—Preparation of compounds comprising a -N-C(O)-N-C(O)-N- moiety
C07C273/1881—Preparation of compounds comprising a -N-C(O)-N-C(O)-N- moiety from urea
C—CHEMISTRY; METALLURGY
C05—FERTILISERS; MANUFACTURE THEREOF
C05C—NITROGENOUS FERTILISERS
C05C9/00—Fertilisers containing urea or urea compounds
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Organic Chemistry
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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