• Top library match: 1-methoxypropan-2-yl acetate #10829

• All reported library similarities are 0.000, S-O the retrieval does not provide a reliable discriminating match.
• The Top-15 library candidates include chemically unrelated structures, which limits confidence in any single narrow identity.
• A band near 2280 cm-1 is not explained by the leading ester candidate and may reflect an impurity, background contribution, or an additional component.
• The present evidence supports an oxygenated ester-like material direction, but not a firm assignment to a single named compound.
• It remains uncertain whether the sample is a pure solvent-like ester, a mixture, or a formulated material containing an ester-rich component.
• The significance of the 2280 cm-1 feature needs confirmation before a narrower structural conclusion is made.

Recommended next steps: Re-run the FTIR with careful background subtraction and confirm whether the 2280 cm-1 band persists in the sample spectrum. Check for ester confirmation by comparing the carbonyl region near 1736 cm-1 and the C-O region from about 1250 to 1000 cm-1 against an authentic spectrum of 1-methoxypropan-2-yl acetate. If the material is volatile, verify by GC-MS to determine whether a single low-molecular-weight ester dominates. If mixture is suspected, combine FTIR with GC-MS or headspace GC-MS to separate the main oxygenated component from minor contributors.