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2-硝基-3-甲氧基吡啶
DISTILLATION HEAD, W. CONDENSER AND STORAGE 500 ML, FOR SOLVENT DISTILLATION, CONE + SOCKET ST 29/3
1-甲基吡咯-2-羧酸
VISCOMETERS, CANNON UBBELOHDE A AND DIL. B, CAPILLARY NR. 150, RANGE cST 7-35 MM2/S, K: 0,035, C
CD-BASEWAX气相毛细管色谱柱
Diamonsil Silica 5μm 250 x 10mm