FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250204153309836133940 Date: 2025-02-05 12:22:55 Reported by: FTIR.fun Contact: [email protected]

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Top15

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Infrared spectrum comparison chart. Analysis result: small carbonyl-containing organic compound with methyl/aliphatic features; possibly nitrile-bearing.

The current FTIR result does not support a firm compound-level identification. Although the nearest library entry is 7-oxabicyclo[4.1.0]heptan-5-one, the match quality is effectively non-discriminating, and the broader library pattern is weak. The measured spectrum is more safely described as a small carbonyl-containing organic material with aliphatic or methyl-type features, while a possible nitrile contribution remains tentative rather than established

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Top 15 candidates

Reference library candidates

Rank	Match %	Compound Name	Formula / SMILES	Library preview	Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

small carbonyl-containing organic compound with methyl/aliphatic features; possibly nitrile-bearing

General assessment

#63906 Initial rank 1 Current rank 1 Library lead match 0.0%

Conclusion

A clear carbonyl-containing material is supported by the paired absorptions at 1699 and 1711 cm-1.
Aliphatic or methyl-type content is supported by the 1445 cm-1 band together with low-wavenumber fingerprint bands at 710 and 722 cm-1.
The library consensus note provides limited support for methyl-related and possible nitrile-related chemistry.

Main limitation

The proposed library hit 7-oxabicyclo[4.1.0]heptan-5-one is not directly supported by distinctive reference evidence for this sample.

Evidence

Key evidence

Kết quả khớp hàng đầu từ thư viện

7-oxabicyclo[4.1.0]heptan-5-one #63906 | match 0.0%

Hướng vật liệu

small carbonyl-containing organic compound with methyl/aliphatic features; possibly nitrile-bearing The current FTIR result does not support a firm compound-level identification. Although the nearest library entry is 7-oxabicyclo[4.1.0]heptan-5-one, the match quality is effectively non-discriminating, and the broader library pattern is weak. The measured spectrum is more safely described as a small carbonyl-containing organic material with aliphatic or methyl-type features, while a possible nitrile contribution remains tentative rather than established.

Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

The current FTIR result does not support a firm compound-level identification. Although the nearest library entry is 7-oxabicyclo[4.1.0]heptan-5-one, the match quality is effectively non-discriminating, and the broader library pattern is weak. The measured spectrum is more safely described as a small carbonyl-containing organic material with aliphatic or methyl-type features, while a possible nitrile contribution remains tentative rather than established.
A clear carbonyl-containing material is supported by the paired absorptions at 1699 and 1711 cm-1.
Aliphatic or methyl-type content is supported by the 1445 cm-1 band together with low-wavenumber fingerprint bands at 710 and 722 cm-1.
The library consensus note provides limited support for methyl-related and possible nitrile-related chemistry.
The observed spectrum shows a strong carbonyl region at 1699 and 1711 cm-1, consistent with a ketone-, ester-, lactone-, or other C=O-containing small organic compound.
Bands at 1445 cm-1 and in the 710-722 cm-1 region are compatible with aliphatic/methyl-containing structure elements.
Additional bands at 1012, 1098, 1167, and 1262 cm-1 are consistent with fingerprint-region C-O and/or other single-bond heteroatom vibrations, but they are not specific enough here to confirm one narrow structure class.
The Top-15 library pattern was summarized as pointing toward nitrile / methyl chemistry, but the listed leading candidates are chemically mixed and include carbonyl-containing species such as a bicyclic ketone/ether, a formamide, and an ester.
Because the top candidates all carry zero similarity and no direct reference or related-literature confirmation is available, the library result is best treated as weak directional evidence rather than an identification.

Limitations

Evidence that limits the conclusion

The proposed library hit 7-oxabicyclo[4.1.0]heptan-5-one is not directly supported by distinctive reference evidence for this sample.
A nitrile assignment is not confirmed because no clear characteristic nitrile band is listed in the usual 2210-2260 cm-1 region.
The leading library candidates do not form a single coherent chemical class, which limits confidence in any narrow assignment.
No direct literature reference was available to confirm the present spectrum.
No stable related-literature match was recovered to narrow the material class further.
The fingerprint-region bands could fit more than one small oxygenated organic structure, including ketones, esters, lactones, or mixed oxygen-containing compounds.
Without a confirmed nitrile-region absorption, the nitrile aspect remains only a bounded hypothesis from the weak library pattern.

Recommendation

Suggested next verification

Re-measure the sample over the full mid-IR range with attention to the 2210-2260 cm-1 region to check specifically for a nitrile band.
Inspect the 2800-3100 cm-1 region for C-H stretching pattern and the 3200-3600 cm-1 region for any O-H or N-H absorption, which would help separate ketone/ester/lactone from amide or alcohol-containing candidates.
If enough sample is available, confirm the carbonyl type by GC-MS or LC-MS and compare against small oxygenated organic compounds rather than relying on the current weak FTIR library hit.
If this is a formulation or extract rather than a pure compound, consider chromatographic separation before repeat FTIR, because mixed components can produce this kind of non-specific library outcome.

Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index	Characteristic	Wavenumber	Absorbance	Evidence	One-line interpretation	Citation	Confidence
1	·	1711	1.00	-	-	-	-
2	·	1012	0.39	-	-	-	-
3	·	1262	0.35	-	-	-	-
4	·	722	0.31	-	-	-	-
5	·	1098	0.30	-	-	-	-
6	·	1699	0.26	-	-	-	-
7	·	1167	0.19	-	-	-	-
8	·	710	0.16	-	-	-	-
9	·	869	0.16	-	-	-	-
10	·	1445	0.12	-	-	-	-

Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction was cancelled by the user.

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Admin từ : Seattle, United States

5 Tháng 2 '25

This is the search result for the file with the extension .JEPG uploaded by user 200.xx.xx.75 raw image:Evidently, this substance is a polymer containing ester groups and long-chain CH2 groups. Further analysis will be provided in a subsequent response.

chia sẻ

small carbonyl-containing organic compound with methyl/aliphatic features; possibly nitrile-bearing

FTIR Spectrum Analysis Report