Table 1 Altered metabolites in drug-treated versus vehicle-treated mice.

From: Tackling new psychoactive substances through metabolomics: UHPLC-HRMS study on natural and synthetic opioids in male and female murine models

Mass

error (ppm)

Retention factor (K)

Formula

Putative annotation MS

Acquisition mode

mz Cloud match

Major fragment ions

Treated vs vehicle

117.0789

0.0

6.92

C5H11NO2

5-Amino-pentanoic acid

HC+ 

83.40%

69.03407

87.04449

100.0760

118.0863

131.0696

0.9

0.24 (RP + /-) 8.36 (HC +)

C4H9N3O2

Creatine

RP+ /− , HC+ 

99.60%

87.0557

90.0553

132.0766

89.0473

 − 4.2

0.26

C3H7NO2

dl-Alanine

RP− 

98%

60.9915

71.0122

89.9865

132.0789

2.0

6.51

C6H12O3

5-Hydroxyhexanoic acid

RP+ 

73.80%

69.0704

73.0652

97.0650

115.0759

174.0158

 − 3.4

1.85

C6H6O6

Aconitic acid

RP−

95.50%

85.0279

115.0759

129.0179

152.0473

-0.2

5.76

C8H8O3

p-Hydroxyphenylacetic acid

RP−

83.90%

93.0330

107.0487

121.0280

151.0745

137.04772

 − 0.3

8.34

C7H7NO2

Trigonelline

HC+ 

99.80%

94.0551

110.0603

138.0549

183.0896

0.5

4.46

C9H13NO3

Epinephrine

HC+ 

80.4%

166.0974

140.0705

125.0471

195.0896

0.5

0.31

C10H13NO3

n-acetyldopamine

HC+ 

71.3%

152.0796

135.0441

195.0534

1.5

6.51

C9H9NO4

Dopaquinone

RP+ 

230.1055

0.0

5.91

C13H14N2O2

Cyclic melatonin

RP+ 

214.0862

158.0964

84.0813

  1. Putative metabolites were identified by matching the accurate mass, isotope pattern or MS/MS data with mass spectral and compound libraries.