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2',5'-Dimethoxyacetophenone, 99% 5GR
(S)-(+)-5-(Hydroxymethyl)-2-pyrrolidinone p-toluenesulfonate, 95% 5GR
焦碳酸二烯丙酯, ≥95.0%
异硫氰酸苯酯
ICP-MS混合标准溶液,10mg/L,5%硝酸基质,由CLMS-2A和CLHG2-1AY两部分组成
钯SH硅胶(0.1mmol/g)
CombiCheck 50 for checking the quality of photometric methods for ammonium, CSB and nitrogen Spectro
N-苄基马来酰亚胺,98%+
4,5-Diphenyl-1,3-oxazole-2-thiol, 97%
氢氧化铵溶液,28% NH3 in H2O(≥99.99% trace metals basis)