	Computational Annotation of MS Peaks (CAMP)
Home Processed databases Atom-Mass pairs Search: (Search for compound name or MassBank ID)	Queried mass: 81.370216 Fragment: Formula: C4O2 Mass offset: 0.321 Num. used hydrogen atoms: 1 Num. of extra required hydrogen atoms: 0 Atom indices: C8,C9,C12,C16,O19,O21 Heavy atoms of the fragment are shown in cyan.