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2-Methyl-2-nitro-1-propanol (无证书)
15种DNPH衍生物混标(HJ 400-2007)
2,3,5,6-Tetrachloronitrobenzene 标准品
HYDROXYCHALCONE, 4'-(RG) 标准品
d-Camphor oxime (无证书)
除草醚
Terbuthylazine
2',3,5-Trichlorobiphenyl 标准品
2.4-Dichlorophenyl benzenesulfonate Solution 100ug/ml in Acetonitrile
Phoxim