Erowid References Database
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Casale JF, Hays PA.
“The Characterization of 6-(2-Aminopropyl)benzofuran and Differentiation from its 4-, 5-, and 7-Positional Analogues”.
Microgram Journal. 2012;9(2):61-74.
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Abstract
The isolation, analysis, synthesis, and characterization of 6-(2-aminopropyl)benzofuran (currently and commonly referred to as 6-APB) are briefly discussed. Analytical data (infrared spectroscopy, mass spectrometry, and nuclear magnetic resonance spectroscopy) are presented to differentiate it from the 4-, 5, and 7- positional analogues.
This laboratory recently received a request to confirm the identity of a suspected sample of 6-(2-aminopropyl)benzofuran and synthesize a primary standard for its identification in a number of drug exhibits. 6-(2-Aminopropyl)benzofuran (Figure 1, structure 3) is widely available through Internet vendors, and is currently marketed as “6-APB” or “Benzo fury.” Herein, we report the isolation, characterization (nuclear magnetic resonance spectroscopy, mass spectrometry, and infrared spectroscopy), and synthesis of 6-(2-aminopropyl)-benzofuran 3. Additionally, data is presented for 4-(2-amino-propyl)benzofuran 1, 5-(2-aminopropyl)benzofuran 2, and 7-(2-aminopropyl)benzofuran 4 to assist forensic chemists who may encounter these substances in casework.
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