International Journal of Analytical Chemistry / 2009 / Article / Fig 4

Research Article

A Multidisciplinary Investigation to Determine the Structure and Source of Dimeric Impurities in AMG 517 Drug Substance

Figure 4

Aromatic region of the , -2D HSQC spectrum of the enriched impurity fraction ((a) 600 MHz) and the , -2D HMQC spectrum of AMG 517 ((b) 400 MHz) in DMSO-d6. In (a), numbers designated as prime (e.g., ) represent signals of Unknown 1, with all others representing signals of Unknown 2.
768743.fig.004a
(a)
768743.fig.004b
(b)

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