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# Mass Spectrum of Fentanyl

## Appears In

                        - NIST Upgrades Widely Used Database of Molecular 'Fingerprints'
                        - Free Software Can Help Spot New Forms of Fentanyl and Other Illegal Drugs

The mass spectrum for the synthetic opioid fentanyl. The mass spectrum is like a molecular fingerprint, and is used to identify unknown compounds. The red lines represent the charged fragments of the molecule created during analysis. The vertical axis shows the relative intensity, or amount, of each fragment, while the horizontal axis shows the mass-to-charge ratio for each fragment.

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June 6, 2017

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