Summary of proposed methoxylamine adducts of ACB.

	m/z	Fragments	Retention time (minutes)
ACB489a	489	472, 441, 402, 396, 369	20.2
ACB489b	489	471, 412, 396	24.5
ACB421	421	405, 393, 375, 363, 286	18.5
ACB419	419	401, 395, 363, 347, 326	25.8
ACB435	435	425, 417, 372, 336, 308, 277	25.2