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Improved synchronism segment, characterized essentially by being constituted by a metal open ring that is flat in its dintorno and its contour has its outer edges affected by a bevel or a step and has on its outer and lateral surface structurally modified by thermochemical action without affect dimensionally the modified structure area. (Machine-translation by Google Translate, not legally binding)
Alpha-aminomethylene-beta-formylaminopropionitrile, process for its preparation and its use in the preparation of 2-methyl-4-amino-5-formylaminomethylpyrimidine