Properties^a

Carbamazepine

Sildenafil citrate

Methylparaben

Molecular

structure

Cs

C₁₅H₁₂N₂O

C₂₈H₃₈N₆O₁₁S

C₈H₈O₃

CAS

298?46?4

171599?3?0

99?76-3

Mw (g/mol)

236.09

666.70

152.05

Ws (mg/L) a 25˚C

18

3500

2500

pKa

<2.3; >13.9

4; 5.5; 8.8

8.4

Log P

2.45

2.70

1.96

H (atm-Cu m/mol)

1.08 × 10⁻⁷

7.2 × 10⁻²¹

2.23 × 10⁻⁹

Calculations with the program Hiperchem

Log P

1.95

0.78

1.49

Surface area (Ų)

300.13

694.53

313.16

Molec. volume (ų)

686.20

1303.37

488.48