I was wondering if it was possible to put chemical formulas ( SUB and SUP characters) into a Label content like:

I was wondering if it was possible to put chemical formulas ( SUB and SUP characters) into a Label content like:

Here a solution using jlatexmath:
private void createGraphic(String textValue, Color color) {
TeXFormula tex = new TeXFormula(textValue);
java.awt.Image awtImage = tex.createBufferedImage(TeXConstants.STYLE_TEXT, 12, color, null);
Image fxImage = SwingFXUtils.toFXImage((BufferedImage) awtImage, null);
label.setGraphic(new ImageView(fxImage));
}