RESULT PAGE

methyl-substituted heteroatom-containing organic material with C-O and possible N-H functionality

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Result No.: 20250505143412888309899 Owner: publicuser Comments: 2
FTIR Analysis Report

methyl-substituted heteroatom-containing organic material with C-O and possible N-H functionality

Sample & Measurement Parameters

Report No. 20250505143412888309899
Date 2025-05-06 01:09:14
Spectral Range (cm⁻¹) [(650, 4000)]
Baseline AsLS baseline correction
Library match 0%

Identification Result

0%

The FTIR evidence does not support a firm identification of the sample as 4-methylbenzene-1,3-diamine. The library search is effectively non-matching, with all leading candidates reported at zero similarity, and no direct or related literature narrows the assignment. The observed bands are more consistent with a broad methyl-substituted heteroatom-containing organic material showing C-O absorption and possible N-H functionality than with a specific named compound

Detailed interpretation

  • Top library match: 4-methylbenzene-1,3-diamine #69466
  • The top library hit, 4-methylbenzene-1,3-diamine, is not supported by a meaningful spectral match because the reported similarity is 0.000.
  • The observed peak set does not provide clear identifying aromatic amine evidence sufficient to justify a specific diamine assignment.
  • The Top-15 candidates are chemically diverse and include mutually inconsistent classes, which limits confidence in any narrow material conclusion.
  • It remains uncertain whether the 3277 cm-1 band is dominated by N-H, O-H, or mixed hydrogen-bonded absorption.
  • The current peak list is too sparse to distinguish reliably among aromatic amine, oxygen heterocycle, amide-containing, or other heteroatom-bearing organic materials.
  • Because no literature-backed reference match was recovered, the present conclusion should be treated as a broad material direction rather than a specific compound identification.

Recommended next steps: Reacquire the FTIR spectrum with full peak intensities and band shapes, especially in the 1800-600 cm-1 fingerprint region, to test whether the 1226/1057 cm-1 pair reflects ether, cyclic acetal, or other C-O functionality. Inspect the 3500-3000 cm-1 region at higher quality to determine whether the 3277 cm-1 band is a sharp amine-type N-H feature or a broader O-H band. Check for additional aromatic ring bands near 1600, 1500, 830-700 cm-1 to assess whether a methyl-substituted aromatic amine remains plausible. If available, confirm with complementary Raman, GC-MS, or NMR analysis to distinguish an oxygen-containing ring system from an aromatic amine or other heteroatom-containing organic component.

Library Comparison

Match group:
Library spectrum will appear here.

Library Search Results — Top 15 Candidates

Rank Match % Compound SMILES Spectrum No. Action
Loading library candidates...

Peak Analysis

★ = Literature-supported assignment
# Wavenumber (cm⁻¹) Absorbance Assignment Citation Assignment status
1 · 1632 1.00 - - -
2 · 1528 0.51 - - -
3 · 1057 0.32 - - -
4 · 1226 0.18 - - -
5 · 3277 0.11 - - -
6 · 2927 0.11 - - -

Appendix — Raw Spectrum

Raw sample spectrum
Generated by FTIR.fun — Report #20250505143412888309899 2025-05-06 01:09:14
Discussion

Comments and follow-up evidence

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The above shows the FTIR analysis results of a png file uploaded by a user (IP: 192.XX.XX.253). The original image is displayed below.1 - 副本.pngSwitch result modes to compare curve similarity, characteristic peaks, or the fingerprint region. The system's conclusion may be inaccurate—refer to Spectrum No. 15532 through 'find spectrum' mode

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