This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
NMR of Trimethylpyrazine. Uploaded with en wp UW marker Trimethylpyrazine ibase aist go jp cgi Spectral Database for Organic Compounds SDBS ibase aist go jp html Spectral Database for Organic Compounds SDBS Pyrazines
Page 2023 Free-images.com. All images are Public Domain