	Computational Annotation of MS Peaks (CAMP)
Home Processed databases Atom-Mass pairs Search: (Search for compound name or MassBank ID)	Queried mass: 67.8 Fragment: Formula: C4O1 Mass offset: 0.274 Num. used hydrogen atoms: 4 Num. of extra required hydrogen atoms: 1 Atom indices: C2,C4,C7,C9,O13 Heavy atoms of the fragment are shown in cyan.