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Pyrazine	Predict NMR spectrum	RN:  290-37-9 MF:  C4H4N2 MW:  80.08916 bp (°C):  115  - 116 mp (°C):  52  - 56 density:  1.031
InChI:  1S/C4H4N2/c1-2-6-4-3-5-1/h1-4H InChIKey:  KYQCOXFCLRTKLS-UHFFFAOYSA-N	H donor:  0 H acceptor:  2 Rotatable bond:  0 Stereocenter:  0	cLogP:  -0.172 cLogS:  -0.026 Polar surface:  25.78
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