Missing expected flows in FEDEFL_INV

[dt-woods]

Working snippet using Python 3.11.7 and lciafmt v.1.1.3:

from lciafmt import Method as LM
from lciafmt import get_method

df = get_method(LM.FEDEFL_INV)
'Carbon dioxide' in sorted(list(df['Flowable'].unique()))

The output is false. Visual inspection confirms this. Is that right?

I just want a simple method to pull CAS Number, Formula, Synonyms for a flow in Federal Elementary Flow List to bulk up my flow metadata.