Table III.

Kinetic Data of Fenoterol Release from Different Formulas

Formula No.	n	K (hr.−1)	t 75	r2
1	0.484	37.15	2.85	1
2	0.245	33.11	8.77	0.993
3	0.275	27.54	13.33	0.992
4	0.262	22.9	20.14	0.999
5	0.271	20.89	20.97	0.994
6	0.25	21.87	21.96	0.989
7	0.301	17.3	22.6	0.955
8	0.512	21.37	8.25	0.994
9	0.555	14.12	13.33	0.989
10	0.51	13.48	18.91	0.988
11	0.517	11.22	22.14	0.99
12	0.482	10	26.05	0.989
13	0.39	9.9	31.47	0.979
14	1.2	11.74	5.08	0.984
15	1.09	8.66	7.62	0.991
16	0.91	9.88	8.92	0.998
17	0.929	8.89	9.96	0.998
18	0.736	21.37	4.57	0.995
19	0.788	16.21	6.72	0.996
20	1.69	3.46	7.54	0.993
21	1.08	7.21	8.04	0.996
22	1.61	2.57	9.49	0.996
23	1.04	9.12	7.62	0.999
24	1.36	4.54	8.67	0.996
25	1.13	5.34	10.51	0.994
26	0.609	22.9	5.52	0.988
27	0.668	15.13	9.22	0.988
28	0.634	12.88	12.63	0.983
29	0.661	8.26	17.79	0.942
30	0.84	12.88	7.72	0.992
31	0.878	9.79	9.52	0.998
32	0.884	6.95	14.31	0.992
33	0.937	4.95	16.72	0.991

n: Release exponent, K: Kinetic constant, t ₇₅ : Time for 75% fenoterol to be released, r ² : Correlation coefficient