C
19
H
21
N
3
O
Related molecular formulas
C
19
H
23
N
3
O
C
18
H
19
N
3
O
C
19
H
21
N
3
O
C
20
H
23
N
3
O
C
19
H
19
N
3
O
C
19
H
21
N
3
C
19
H
21
N
3
O
2
C
19
H
20
N
2
O
C
19
H
22
N
4
O
The
molecular formula
C
19
H
21
N
3
O
(molar mass: 307.39 g/mol, exact mass: 307.1685 u) may refer to:
Alcaftadine
Talastine
Zolpidem
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