Ok, the thread went lost in the forum platform upgrade, so I'll try to summarize the conclusions here:
I had 2 NMR tests (in liquid, with multiple spectra) done, respectively on Wuhan Hengheda Pharm (WHP) batch #20151228 and Kane batch #20151230.
Results: both are proper CB; WHP with < 1% impurities, Kane's with ~3% impurities. (rough estimation, as NMR is not the best test to measure impurities).
I had 2 NMR tests (in liquid, with multiple spectra) done, respectively on Wuhan Hengheda Pharm (WHP) batch #20151228 and Kane batch #20151230.
Results: both are proper CB; WHP with < 1% impurities, Kane's with ~3% impurities. (rough estimation, as NMR is not the best test to measure impurities).