Name

Molecular formula

Accurate [M + H]+

Measured [M + H]+

Mass error (ppm)

Sch B

C23H28O6

401.1964

401.1989

6.23

M1

C23H28O7

417.1913

417.1923

2.39

M2

C22H26O6

387.1808

387.1809

0.26

M3

C22H28O6

389.1964

389.1983

4.88

M4

C28H36O12

565.2285

565.2281

−0.71