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1,3,3-三甲基吲哚-6'-硝基苯并二氢吡喃并螺烷 [光致变色化合物]
SURCHARGE FOR RUBBER STOPPERS, WITH 2 HOLES, D. 3-8 MM
HYPERSIL GOLD PFP 5UM 20X2.1MM DASH HTS PK/10
BOTTLES,FEP, WIDE NECK, HIGH RESISTANCE BOTH TO HEAT + CHEMICALS ATTACKS, 100 ML,
溴甲酚紫
3-Hydroxy-2,4,6-triiodobenzoic acid
K6 正相TLC板(无荧光)
1/8”,黄铜直角接头
GUIDE RAIL FOR COLUMN HOLDER
7种阴离子混标,SO4/F/Br/NO3/NO2/PO4/Cl,溶于 H2O