CAS No. : 22839-47-0
Chemical Formula : C14H18N2O5
STD No. : 1205A
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Chemical Formula : C13H14N2O4
STD No. : 12051A
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CAS No. : 13433-09-5
Chemical Formula : C13H16N2O5
STD No. : 12052A
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CAS No. : 63-91-2
Chemical Formula : C9H11NO2
STD No. : 12053A
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