Table 2.

Identification of the absorbed constituents in rat plasma after oral administration of ANP by GC–MS

No	tR (min)	Compound	Formula	CAS	Structure type	Source
M1	18.54	Camphora	C10H16O	76-22-2	Monoterpenes	B
P1	19.27	Isoborneola	C10H18O	124-76-5	Monoterpenes	B
P2	19.63	d-Borneola	C10H18O	464-43-7	Monoterpenes	B
P3	45.32	Musconea	C16H30O	541-91-3	Ketones	M

Sources: B Borneolum, M Moschus

^aThe identification was confirmed with reference standards