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

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結果編號: 20250204153309836133940 擁有者: Admin 評論: 1
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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

Similarity-ranked Top-15 library comparison

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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
  1. A clear carbonyl-containing material is supported by the paired absorptions at 1699 and 1711 cm-1.
  2. 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.
  3. 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 & interpretation
Evidence

Key evidence

資料庫主要匹配
7-oxabicyclo[4.1.0]heptan-5-one #63906 | match 0.0%
材料方向
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.

  1. 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.
  2. A clear carbonyl-containing material is supported by the paired absorptions at 1699 and 1711 cm-1.
  3. 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.
  4. The library consensus note provides limited support for methyl-related and possible nitrile-related chemistry.
  5. 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.
  6. Bands at 1445 cm-1 and in the 710-722 cm-1 region are compatible with aliphatic/methyl-containing structure elements.
  7. 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.
  8. 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.
  9. 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:

Sample spectrum image
討論

評論和後續證據

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Admin  來自 : Seattle, United States
  • 5 二月 '25

This is the search result for the file with the extension .JEPG uploaded by user 200.xx.xx.75 raw image:202502041533098361339401.jpgEvidently, this substance is a polymer containing ester groups and long-chain CH2 groups. Further analysis will be provided in a subsequent response.

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