Structure #

Name |
Structure |
|---|---|
L-amphetamine
|
|
D-amphetamine
|
|
Chemical and Physical Properties #
Property Name |
Property Value |
|---|---|
Molecular Weight |
135.21 |
Exact Mass |
135.104799419 |
Monoisotopic Mass |
135.104799419 |
Dissociation Constants |
pKa 9.9 (ADDERALL XR (amphetamine) FDA label) pKa = 10.13 (conjugate acid) (Dissociation constants of organic bases in aqueous solution) A pKa of 10.13(1) indicates amphetamine will exist almost entirely in the cation form at pH values of 5 to 9. |
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Spectral Information #
GC-MS #
m/z Top Peak 44
m/z 2nd Highest 91
m/z 3rd Highest 65
m/z Top Peak 44
m/z 2nd Highest 91
m/z 3rd Highest 42
MS-MS #
Top 5 Peaks
119.0859 100
136.1124 77.34
120.0892 12.35
137.1161 8.38
LC-MS #
Precursor Type [M+H]+
Precursor m/z 136.1121
Ionization ESI
Ionization Mode positive
Collision Energy 10 eV
Top 5 Peaks
119.0859 100
136.1124 77.34
120.0892 12.35
137.1161 8.38