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A SMILES notation is turned into an
annotated SMILES notation by appending
annotation code to selected atomic symbols or to the end of a
notation. Annotation code is enclosed by curly braces.
Annotation code consists of an one- or two-character
annotation marker
(AM). Two-character AMs are
optionally followed by an
annotation dictionary.
Atom-anchored annotation
code follows the atomic symbol directly or the
closing square bracket of bracket-encoded atoms. Digits
denoting ring formation are the only characters allowed between
atom code and annotation code.
Atom-anchored annotations include:
A component-anchored annotation is
attached to the end of a
component notation . There are:
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