87344-98-7
1-nitroso-1-phenyl-3-(4-pyridylmethyl)-urea
→
~11%
84824-90-8
1,3-bis(pyridin-4-ylmethyl)urea
+
35017-43-7
1-phenyl-3-(pyridin-4-ylmethyl)urea
71-43-2
苯
~5%
3731-53-1
4-甲氨基吡啶
92-52-4
联苯