Angiotensin II Receptor Antagonists

1 . A polymorphic form of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid, or a pharmaceutically acceptable salt or hydrate thereof.

2 . A polymorphic form of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 1 having X-ray powder diffraction pattern d-spacing readings selected from the group of readings consisting of

a) about 12.9, about 4.8, about 4.0, about 3.79, about 3.77, about 3.7, and about 3.4 Å,

b) about 8.6, about 6.5, about 5.7, about 3.9, and about 3.7 Å,

c) about 18.8, about 9.5, about 9.3, about 6.2, and about 4.2 Å,

d) about 8.6, about 5.0, about 3.7, and about 3.6 Å,

e) about 6.44, about 6.39, about 6.3, and about 4.2 Å,

f) about 7.4, about 6.8, and about 6.7 Å,

g) about 15.9 Å, and

h) about 9.1, about 8.1, about 6.6, about 4.2, about 3.7 and about 3.7 Å.

3 . A polymorphic form of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 2 having X-ray powder diffraction pattern d-spacing readings selected from the group of readings consisting of

a) about 12.96, about 4.75, about 3.97, about 3.79, about 3.77, about 3.71, and about 3.44 Å,

b) about 8.55, about 6.54, about 5.68, about 3.90, and about 3.71 Å,

c) about 18.78, about 9.49, about 9.34, about 6.22, and about 4.20 Å,

d) about 8.57, about 5.01, about 3.66, and about 3.63 Å,

e) about 6.44, about 6.39, about 6.34, and about 4.20 Å,

f) about 7.38, about 6.75, and about 6.69 Å,

g) about 15.91 Å, and

h) about 9.13, about 8.09, about 6.61, about 4.18, about 3.70 and about 3.65 Å.

4 . A polymorphic form of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 2 having X-ray powder diffraction pattern d-spacing readings selected from the group of readings consisting of

a) 12.96, 8.32, 8.13, 7.06, 5.18, 4.75, 4.64, 4.45, 4.41, 4.33, 4.19, 3.97, 3.86, 3.79, 3.77, 3.71, 3.59, 3.44, 3.15, and 2.92 Å,

b) 10.09, 8.55, 7.42, 7.26, 6.54, 6.43, 5.68, 4.39, 4.26, 4.17, 4.12, 4.10, 4.02, 3.90, 3.85, 3.71, 3.67, 3.63, 3.59, 3.44, 3.37, 3.35, 3.12, and 3.02 Å,

c) 18.78, 9.49, 9.34, 6.22, 6.18, 4.85, 4.67, 4.46, 4.20, 3.97, 3.68, 3.66, 3.63, and 3.50 Å,

d) 10.52, 8.57, 7.46, 6.60, 5.45, 5.37, 5.01, 4.91, 4.65, 3.80, 3.66, 3.63, 3.29, 3.23, 3.22, 3.19, 3.02 Å,

e) 7.34, 6.90, 6.44, 6.39, 6.34, 5.69, 5.64, 4.54, 4.26, 4.24, 4.20, 3.91, 3.90, 3.77, and 3.59 Å,

f) 7.38, 7.32, 6.75, 6.69, 4.38, 4.03, 3.76, 3.70, and 3.42 Å,

g) 15.91, 9.99, 8.37, and 7.59 Å, and

h) 10.99, 9.13, 8.69, 8.09, 6.61, 6.32, 6.24, 5.39, 4.37, 4.23, 4.18, 3.96, 3.93, 3.80, 3.70, 3.65, 3.24, 3.17 and 3.13 Å.

5 . A polymorphic form of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 3 selected from the group consisting of 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid hydrochloride Form I, 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid hydrochloride Form II, 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid hydrochloride Form III, and 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid monohydrate Form IV, 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid monohydrate Form V, 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid monohydrate Form VI, 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid monohydrate Form VII, and 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid monohydrate Form VIII.

6 . A pharmaceutical particle matrix composition comprising

a) an amount between about 1 and 75% w/w of crystalline 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 2 ;

b) an amount between about 2.5 and 90% w/w of at least one water swellable polymer;

c) an amount between about 2.5 and 90% w/w of at least one filler; and

d) an amount between about 0.5 and 10% w/w of at least one lubricant,

wherein the particle size of the particle is between about 50 and 1200 μm.

7 . A composition of claim 5 , wherein the swellable polymer is preferably selected from the group consisting of polyethylene oxide and hydroxypropylmethyl cellulose, the filler is preferably a mixture of dicalcium phosphate and microcrystalline cellulose, and the lubricant is preferably magnesium stearate. water swellable polymer is selected from the group consisting of polyethylene oxide and hydroxypropylmethyl cellulose.

8 . An erodible matrix composition pharmaceutical tablet comprising

a) an amount between about 1 and 75% w/w of crystalline 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 2 ;

b) an amount between about 2.5 and 25% w/w of at least one water swellable polymer;

c) an amount between about 2.5 and 15% w/w of at least one solubilizing agent; and

d) an amount between about 2.5 and 90% w/w of at least one filler.

9 . A composition of claim 7 , wherein the water swellable polymer is selected from the group consisting of polyethylene oxide and hydroxypropylmethyl cellulose, the bulking agent is a mixture of dicalcium phosphate, microcrystalline cellulose and lactose, and the solubilizing agent is selected from the group of block copolymers of ethylene oxide and propylene oxide.

10 . A pharmaceutical composition comprising a granule and a coating material coating the granule, wherein

a) the granule comprises

1) an amount between about 1 and 75% w/w of crystalline 2-butyl-4-chloro-1-[(2′-(1-H-tetrazol-5-yl)biphenyl-4-yl)methyl]-imidazole-5-carboxylic acid of claim 2 ;

2) an amount between about 5 and 50% w/w of at least one neutralizing agent;

3) an amount between about 1 and 25% w/v of at least one binder; and

4) an amount between about 5 and 75% w/w of at least one filler;

wherein the particle size of the granule is between about 100 and 1200 μm; and

b) the coating material comprises

1) a polymer deposited in the form of an aqueous dispersion or organic solution with subsequent evaporation of the dispersion solvents, wherein the amount of polymer in the coating material is such that the amount of polymer deposited on the granule is between about 5 and 40% w/w of the granule;

2) a plasticizer in the amount of up to 40% of the polymer weight; and

3) an anti-tacking agent in the amount of up to 10% of the polymer weight.

11 . A composition of claim 9 , wherein the neutralizing agent is dibasic sodium phosphate heptahydrate, the filler is microcrystalline cellulose, the binder is hydroxypropyl cellulose, and the aqueous dispersion comprises ethyl cellulose, triethyl citrate and kaolin.