A Strategy for Screening the Lipid-Lowering Components in Alismatis Rhizoma Decoction Based on Spectrum-Effect Analysis

Table 2

Identification of the common peaks.

Peak	tR(min)	MS^1 [M+H]^+	Error (ppm)	Fragment ions collected in positive mode	Molecular formula	Identification
1	34.88	471.2136	1.1	453.2013, 295.1641, 277.1545, 248.1306, 177.0552, 145.0550	C25H31N2O7	Unknown
2	35.55	469.1962	−2.8	293.1486, 276.1258, 219.1372, 177.0576, 145.0312	C25H29N2O7	Unknown
3	37.76	389.2546	1.8	371.2191, 330.2155, 284.1887, 244.1507	C20H36O7	Tetradecylcitric acid
4	39.72	203.1785	−4.6	161.1245, 147.1129, 133.0995, 119.0852	C15H22	Atractylenolide VI
5	40.73	487.3411	−2.5	469.3322, 451.3216, 415.2839, 397.2657	C30H46O5	Alisol C^a
6	41.24	487.3425	0.4	469.3325, 451.3220, 397.2732	C30H46O5	16-oxo-11-anhydro-alisol A
7	41.65	274.1809	0.7	177.0571, 145.0363	C17H24NO2	Unknown
8	42.26	230.1539	−2.6	159.1148	C15H19NO	Atractylenolactam
9	43.25	529.3553	4.5	511.3440, 469.3327, 451.3228, 415.2849, 397.2732	C32H48O6	Alisol C 23-acetate^a
10	43.69	469.3319	0.2	451.3215, 397.2744	C30H44O4	Alisol L
11	44.06	233.1543	0.4	215.1426, 187.1472, 177.1213, 159.1075, 145.0978	C15H20O2	Atractylenolide I^a
12	44.28	473.3618	−3.8	455.3517, 437.3402, 383,2941, 365.2842, 339.2682	C30H48O4	Alisol G
13	44.88	494.3636	0.4	453.3376, 381.2792, 339.2673	C32H48NO3	Unknown
14	46.24	545.3496	3.3	527.3380, 485.3280, 467.3181	C32H48O7	Alisol M 23-acetate
15	46.56	513.3589	1.8	495.3184, 453.3332, 435.3245, 381.2845	C32H48O5	Alisol O
16	46.92	455.351	−3.3	437.3420, 419.3304, 383.2925, 365.2813, 339.2660	C30H46O3	Alisol I
17	47.15	511.3437	2.7	493.3347, 451.3136, 433.2851	C32H46O5	Alisol L 23-acetate
18	47.44	473.3639	1.7	455.3535, 437.3431, 383.2944, 365.2848, 339.2687	C30H48O4	Alisol B^a
19	48.68	499.2791	2.0	455.3461, 423.3522, 365.2821, 295.1573, 2111.0988	C32H39N2O3	Unknown
20	49.49	515.376	4.7	497.3654,4 79.3536, 437.3434, 419.3329, 383.2957, 365.2858, 339.2960	C32H50O5	Alisol B 23-acetate^a

^aCompared with the reference standards.