PI20090010 氮卓斯汀杂质K Azelastine Impurity K CAS No:N/A ||Chemical Formula:C15H19N3O2 ||Molecular Weight:273.33600 ||Exact Mass:273.14773 ||2-(1-methylazepan-4-yl)-2,3-dihydrophthalazine-1,4-dione
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