Table 4.
Hydrolytic regressive functions of rac-dufulin enantiomers (3.00 μg/mL) in water (n=3)
|
Enantiomer |
pH |
Temp. (°C) |
Regressive function |
Parameters (n= 3) |
ES valuea |
|
|---|---|---|---|---|---|---|
| R2 | t1/2(day) | |||||
|
S-(+) |
5 |
25 |
Ct = 3.1994 e-0.0150t |
0.8343 |
46.2 |
0 |
|
R-(−) |
Ct = 3.1436 e-0.0150t |
0.8739 |
46.2 |
|||
|
S-(+) |
7 |
15 |
Ct = 3.2173 e-0.0089t |
0.8174 |
77.9 |
−0.099 |
|
R-(−) |
Ct = 3.0919 e-0.0073t |
0.8429 |
95.0 |
|||
|
S-(+) |
7 |
25 |
Ct = 3.4911 e-0.0112t |
0.9425 |
61.9 |
−0.062 |
|
R-(−) |
Ct = 3.3504 e-0.0099t |
0.9211 |
70.0 |
|||
|
S-(+) |
7 |
45 |
Ct = 3.2600 e-0.0137t |
0.8574 |
50.6 |
−0.083 |
|
R-(−) |
Ct = 3.0622 e-0.0116t |
0.7813 |
59.8 |
|||
|
S-(+) |
9 |
25 |
Ct = 3.5993 e-0.0170t |
0.9502 |
40.8 |
−0.033 |
| R-(−) | Ct = 3.4382 e-0.0159t | 0.9724 | 43.6 | |||
aThe ES value is defined as the enantiomeric selectivity value.