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Glipizide Impurities

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PHR1813   N-{2-[(4-aminosulfonyl)phenyl]ethyl}-5-methyl-pyrazinecarboxamide (Glipizide Related Compound A) (Glipizide Impurity A) Pharmaceutical Secondary Standard; Certified Reference Material 4-[2-(5-Methylpyrazine-2-carboxamido)ethyl]benzenesulfonamide N-{2-[4-(Aminosulfonyl)phenyl]ethyl}-5-methyl-2-pyrazinecarboxamide
PHR1815   1-cyclohexyl-3-[[4-[2-[[(6-methylpyrazin-2-yl)carbonyl]amino]ethyl]phenyl]sulfonyl]urea (Glipizide Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material 1-cyclohexyl-3-[4-[2-[[(-methylpyrazin-2-yl)carnonyl]amino]ethyl]phenyl]sulfonyl]ureea (Glipizide Related Compound C-USP
PHR1814   6-methyl-N-[2-(4-sulphamoylphenyl)ethyl]pyrazine-2-carboxamide (Glipizide Related Compound B) (Glipizide Impurity D) Pharmaceutical Secondary Standard; Certified Reference Material 6-Methyl-N-[2-(4-sulphamoylphenyl)ethyl]pyrazine-2-carboxamide