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... XYPYR ... (8 elements)

en (6) : DEOXYPYRIMIDINE · HYDROXYPYRUVATE · METHOXYPYRAZINES · SULFAMETHOXYPYRAZINE · SULFAMETHOXYPYRIDAZINE · SULPHAMETHOXYPYRIDAZINE

fr (2) : HYDROXYPYRUVATE · SULFAMETHOXYPYRIDAZINE

... XYPY ... (8 elements)

DEOXYPYRIMIDINE · HYDROXYPYRUVATE · METHOXYPYRAZINES · SULFAMETHOXYPYRAZINE · SULFAMETHOXYPYRIDAZINE · SULPHAMETHOXYPYRIDAZINE

... YPYR ... (16 elements)

DASYPYRUM · DEOXYPYRIMIDINE · DYPYRIDAMOLE · MYPYRAMID · POLYPYRIDINE · POLYPYRIMIDINE · POLYPYRROL · POLYPYRROLE · SULFAMETHOXYPYRIDAZINE · SULPHAMETHOXYPYRIDAZINE

... OXYPYR ... (8 elements)

DEOXYPYRIMIDINE · HYDROXYPYRUVATE · METHOXYPYRAZINES · SULFAMETHOXYPYRAZINE · SULFAMETHOXYPYRIDAZINE

... XYPYRA ... (2 elements)

METHOXYPYRAZINES · SULFAMETHOXYPYRAZINE

... XYPYRI ... (4 elements)

DEOXYPYRIMIDINE · SULFAMETHOXYPYRIDAZINE · SULPHAMETHOXYPYRIDAZINE

... XYPYRU ... (2 elements)

HYDROXYPYRUVATE