A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K31/00—Medicinal preparations containing organic active ingredients
A61K31/33—Heterocyclic compounds
A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
A61K31/525—Isoalloxazines, e.g. riboflavins, vitamin B2
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N-[3-(1'-3"-Oxapentamethylene-amino-ethylideneamino)-2,4,6-triiodobenzoyl]-β-amino-α- methylpropionitrile in process to make corresponding acid