MethiopropamineThe Drug Enforcement Administration's Special Testing and Research Laboratory

generated this monograph using structurally confirmed reference material.

Page 1 of 5SWGDRUG.org/monographs.htmLatest Revision: 12/16/2013

http://en.wikipedia.org/wiki/Methiopropamine

http://forendex.southernforensic.org/index.php/detail/index/1180

Form Chemical Formula Molecular Weight Melting Point (oC)

Base C8H13NS 155 Not Determined

HCl C8H13NS . HCl 191 138.4

SCH3

NHCH3

1. GENERAL INFORMATION

IUPAC Name: N-methyl-1-(thiophen-2-yl)propan-2-amine

CAS#: 801156-47-8 (Base); 7464-94-0 (HCl)

Synonyms: MPA

Source: DEA Reference Material Collection

Appearance: White powder (HCl)

UVmax(nm): Not Determined

2. CHEMICAL AND PHYSICAL DATA

2.1 CHEMICAL DATA

MethiopropamineThe Drug Enforcement Administration's Special Testing and Research Laboratory

generated this monograph using structurally confirmed reference material.

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3. QUALITATIVE DATA

3.1 NUCLEAR MAGNETIC RESONANCE

Method NMR CD3OD

Sample Preparation: Dilute analyte to ~10 mg/mL inCD3OD containing TMS for 0 ppm reference andmaleic acid as quantitative internal standard.

Instrument: 400 MHz NMR spectrometerParameters: Spectral width: at least containing -3 ppm through 13 ppm Pulse angle: 90o

Delay between pulses: 45 seconds

Chemical Shift (ppm)

3

Chemical Shift (ppm)8 7 6 5 4 3 2

0

2

4

6

8

10

3311121

CD3OD

TMS

Maleic Acid CD3OD

1H NMR: Methiopropamine HCl Lot N16-P88A; CD3OD; 400 MHz

Chemical Shift (ppm)

0

1

2

3

21

Chemical Shift (ppm)3.50

0

1

2

111

CD3OD

MethiopropamineThe Drug Enforcement Administration's Special Testing and Research Laboratory

generated this monograph using structurally confirmed reference material.

Page 3 of 5SWGDRUG.org/monographs.htmLatest Revision: 12/16/2013m/z160140120100806040

[x 1

06 ]In

tens

ity

0.5

1.0

1.5

2.0

2.5

154

140

123

110

97

92796965

5856

534539EI+

EI Mass Spectrum: Methiopropamine HCl Lot # N16-P88A

3.2 Gas Chromatography/Mass Spectrometry

Sample Preparation: Dilute analyte ~1 mg/mL methanol.

Instrument: Agilent gas chromatograph operated in split mode with MS detectorColumn: DB-1 MS (or equivalent); 30m x 0.25 mm x 0.25 µmCarrier Gas: Helium at 1 mL/minTemperatures: Injector: 280oC MSD transfer line: 280oC MS Source: 230oC MS Quad: 150oC Oven program: 1) 100oC initial temperature for 1.0 min 2) Ramp to 300oC at 12 oC/min 3) Hold final temperature for 9.0 minInjection Parameters: Split Ratio = 20:1, 1 µL injectedMS Parameters: Mass scan range: 30-550 amu Threshold: 100 Tune file: stune.u Acquisition mode: scanRetention Time: 4.611 min

MethiopropamineThe Drug Enforcement Administration's Special Testing and Research Laboratory

generated this monograph using structurally confirmed reference material.

Page 4 of 5SWGDRUG.org/monographs.htmLatest Revision: 12/16/2013

3.3 INFRARED SPECTROSCOPY (FTIR)

Insrument: FTIR with diamond ATR attachment (3 bounce)Scan Parameters: Number of scans: 32

Number of background scans: 32Resolution: 4 cm-1

Sample gain: 8Aperture: 150

Wavenumber (cm-1)3500 3000 2500 2000 1500

%Tr

ansm

ittan

ce

20

30

40

50

60

70

30242964

28952829

27892721

25822549

2457

16011487

1433 13851348 1261 1147

10971063 1049

1016856

843820

715 704685

517463

Wavenumber (cm-1)1700 1600 1500 1400 1300 1200 1100 1000 900 800 700

%Tr

ansm

ittan

ce

20

30

40

50

60

1601

14871471

1433 138513631348

1335 1261122511921174 1147

10971063 1049

1016

922 856843

820

715 704685

517

463438

FTIR ATR (Diamond, 3 Bounce): Methiopropamine HCl Lot N16-P88A

MethiopropamineThe Drug Enforcement Administration's Special Testing and Research Laboratory

generated this monograph using structurally confirmed reference material.

Page 5 of 5SWGDRUG.org/monographs.htmLatest Revision: 12/16/2013

4. ADDITIONAL RESOURCES

Forendex

Wikipedia