	Computational Annotation of MS Peaks (CAMP)
Home Processed databases Atom-Mass pairs Search: (Search for compound name or MassBank ID)	Queried mass: 68.023 Fragment: Formula: C4O1 Mass offset: 0.051 Num. used hydrogen atoms: 4 Num. of extra required hydrogen atoms: 2 Atom indices: C7,C13,C14,C15,O18 Heavy atoms of the fragment are shown in cyan.