C
18
H
21
NO
3
Related molecular formulas
C
18
H
23
N
O
3
C
17
H
19
N
O
3
C
18
H
21
N
O
3
C
19
H
23
N
O
3
C
18
H
19
N
O
3
C
18
H
21
N
O
2
C
18
H
21
N
O
4
C
18
H
20
O
3
C
18
H
22
N
2
O
3
The molecular formula
C
18
H
21
NO
3
(molar mass : 299.36 g/mol) may refer to:
Codeine
Erythravine
Heterocodeine
Hydrocodone
Isocodeine
Metopon