Patent ID: 8470787

Claim:
A hydrate of an erythromycin salt selected from the group consisting of: erythromycin lactobionate undecahydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is lactobionic acid, and n=11; erythromycin lactobionate hexahydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is lactobionic acid, and n=6; erythromycin lactobionate pentahydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is lactobionic acid, and n=5; erythromycin lactobionate hemihepta(3.5)hydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is lactobionic acid, and n=3.5; erythromycin lactobionate trihydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is lactobionic acid, and n=3; erythromycin thiocyanate trihydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is thiocyanic acid, and n=3; erythromycin thiocyanate dihydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is thiocyanic acid, and n=2; and erythromycin thiocyanate hemitri(1.5)hydrate having a molecular formula of C 37 H 67 NO 13 .A.nH 2 O, wherein A is thiocyanic acid, and n=1.5.