can't read?
: N 1670
: 1124-33-0
: C5H4N2O3
: 140.10
: N 1670 (OTTOKEMI) 4-Nitropyridine N-Oxide, 98% Cas 1124-33-0 - used in chemical research.
: Organometallic reagents,Grignard reagents
: 98%
: Powder or crystals
: Light yellow to amber to dark green
: 161-164 °C
WGK 3