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N-(b-Chloroethyl)phthalimide (无证书)
Print View QC material Au76/Cu16/Ni6/Zn2 (EN1811:2011) (Set of 5)
Diethyl maleate
N-Acetyl-S-(3-hydroxypropyl-1-methyl)-L-cysteine Dicyclohexylammonium Salt(Mixture of Diastereomers)
Potassium hexafluorozirconate
First Standard® 乙腈中解草腈溶液,1000ug/ml
(办证) Triforine D8 (piperazine D8),certified 标准品
Sodium Butyrate-d7 标准品
PCB/SIM Solution 标准品
(易制毒)8260 VOC混标,MEOH 2000UG/ML 标准品