2. Drugs or medicines and their
administration. Medications are
chemical substances meant foruse
in medical diagnosis, treatment,
cure, orprevention of disease
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3. Doxycycline EP
Impurity A
CAS No. 3219-99-6 (base) ; 41411-66-9 (HCl)
Molecular Formula: C22H24N2O8 (base) ; C22H25ClN2O8 (HCl salt)
4. Doxycycline EP
Impurity B
CAS No. 914-00-1 (base) ; 3963-95-9 (HCl)
Molecular Formula: C22H22N2O8 (base) ; C22H23ClN2O8 (base)