Q Magnetics

Q Magnetics: NMR for Everyone

[Q Magnetics @QMagnetics]

125 MHz benchtop NMR of 1,4-diethylbenzene shows a simple spectrum from a para substituted aromatic ring. The ethyl groups act as a weak electron donating group, shifting the aromatic signals slightly upfield compared to rings without electron donating groups. Distinct aromatic, methylene, and methyl resonances make it an excellent example of substituent effects in aromatic NMR spectroscopy. It serves as a precursor to materials used in ion exchange resins.
#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #14Diethylbenzene #Diethylbenzene #Para #Parasubstituted #EDG #Electrondonating #Upfield #Aromatic #Methylene #Methyl #Substituent #Ion #Ionexchange #Resins

[Q Magnetics @QMagnetics]

125 MHz benchtop NMR of 4-Nitrotoluene gives a simple, well resolved spectrum with two aromatic doublets from the para substituted ring and a sharp methyl singlet. The strong electron withdrawing nitro group shifts the aromatic signals downfield. 4-Nitrotoluene is used in the production of azo dyes, pigments,and agricultural chemicals.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #4Nitrotoluene #Nitrotoluene #Toluene #Para #Parasubstituted #Methyl #Electronwithdrawing #EWG #Nitro #Downfield #Azodyes #Pigments #Agriculture

[Q Magnetics @QMagnetics]

125 MHz benchtop NMR highlights the clean alkene and aldehyde signals of trans-2-hexenal. Its conjugated structure shifts the aldehyde proton downfield while the trans alkene gives well separated vinyl resonances. Trans-2-hexenal is widely used in flavors and fragrances for its fresh, leafy aroma.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Trans2hexenal #Alkene #Aldehyde #Conjugated #Trans #Vinyl #Flavor #Fragrance #Fragrancechemistry #Perfumery

[Q Magnetics @QMagnetics]

125 MHz benchtop ¹H NMR of isopropylbenzene. Used in the production of phenol and acetone, it also appears in fuels and industrial solvents. This type of analysis is useful in petrochemical and chemical manufacturing settings for monitoring feedstocks and product purity. Its monosubstituted benzene ring gives the characteristic aromatic multiplet pattern, while the isopropyl group produces well resolved benzylic and methyl resonances with clean coupling.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Isopropylbenzene #Cumene #Phenol #Acetone #Fuel #Solvents #Industrial #Petrochemical #Petrochemistry #Chemicalmanufacturing #Feedstocks #Purity #Productpurity #Aromatic #Benzylic #Methyl #Coupling #Isopropyl

[Q Magnetics @QMagnetics]

125 MHz benchtop ¹H NMR of propylene carbonate. Used as a solvent in lithium-ion batteries and in cosmetics for pigment dispersion and stabilization. Its cyclic carbonate ring creates a rigid structure that reduces signal overlap. The electron-withdrawing group shifts methylene protons downfield, while the asymmetric environment gives a distinct methyl signal and clean splitting.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Propylenecarbonate #Battery #Lithiumion #Pigmentation #Makeup #Cosmetics #Cosmeticchemistry #Carbonate #Methylene #Methyl #Resonance

[Q Magnetics @QMagnetics]

125 MHz ¹H NMR of 4-dimethylaminobenzaldehyde on a QM-125 benchtop instrument shows a clean spectrum from an aromatic aldehyde. The para-substituted ring gives two distinct doublets, while the dimethylamino group appears as a sharp singlet, and the aldehyde proton sits downfield. It’s widely used in colorimetric tests, where it reacts to produce visible color changes for detection, and as an intermediate in azo dyes and pharmaceuticals.🧪

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Dimethylaminobenzaldehyde #Dyes #Azodye #Pharmaceuticals #Aldehyde #Parasubstituted #Amino #Colorimetric #Colorchange

[Q Magnetics @QMagnetics]

125 MHz ¹H NMR of 4-Hydroxypropiophenone showcases a well-resolved spectrum from a simple aromatic ketone. The para substituted ring gives two distinct doublets, the ethyl side chain adds aliphatic signals. It is a commonly used intermediate in pharmaceuticals and fragrance chemistry.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #4Hydroxypropiophenone #Ketone #Parasubstituted #Splitting #Intermediate #Pharmaceuticals #Fragrance #Fragrancechemistry #Perfumery

[Q Magnetics @QMagnetics]

From soft plastics to sharp spectra, diethyl phthalate (DEP) is well resolved on the QM 125 benchtop ¹H NMR. It is used as a plasticizer for PVC and cellulose acetate to improve flexibility and as a low-volatility solvent in fragrances and cosmetics. Its symmetric phthalate core leads to characteristic aromatic splitting patterns.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Diethylphthalate #DEP #Plasticizer #Cellulose #PVC #Cosmetics #Cosmeticchemistry #Fragrance #Fragrancechemistry #Perfumery

[Q Magnetics @QMagnetics]

125 MHz ¹H NMR of Brilliant Blue FCF reveals the spectral signature of one of the most recognizable food dyes. Its highly conjugated triarylmethane core produces a rich set of aromatic resonances, while sulfonated groups shape peak positions in aqueous solution. Widely used to give a vivid blue color to sports drinks, sodas, candy, frostings, and blue raspberry–flavored products.🧪

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Chemistry #Organicchemistry #Analyticalchemistry #Brilliantblue #Fooddye #Blue #Bluerasberry #Vivid #Foodscience

[Q Magnetics @QMagnetics]

125 MHz ¹H NMR of caffeine. Beyond its stimulant role, caffeine contributes key bitterness and balance in beverages, making authentic caffeine-free flavor profiles difficult to replicate. Its substituted xanthine core yields three distinct N-methyl singlets and a characteristic aromatic proton, creating an easily recognized spectral fingerprint.

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Caffeine #Stimulant #Bitter #Coffee #Cola #Caffeinefree #Flavor #Xanthine #Aromatic #Chemistry #Organicchemistry #Analyticalchemistry #Foodscience

[Q Magnetics @QMagnetics]

Last day at the @AmerChemSociety Spring 2026 expo! Stop by booth #1325 and chat with John! 🧪 🧲
#ACSSpring2026 #ACS #ACS150 #NMR #NMRchat #BenchtopNMR #QM125

[Q Magnetics @QMagnetics]

Live from ACS Spring 2026. Come say hello and see the QM-125 benchtop NMR. Booth #1325. 🧪
#ACSSpring2026 #ACS #ACS150 #NMR #NMRchat #BenchtopNMR

[Q Magnetics @QMagnetics]

Correction: The limit of detection (LOD) of the QM-125 is 20 nmol, not 20 nM. We define LOD as the number of moles that yields SNR=1 for a one-spin singlet and a single scan. For the SNR we use the standard NMR spectoscopic SNR, equal to the peak height divided by twice the RMS of the baseline. This is the SNR measured by most NMR analysis software.

[Q Magnetics @QMagnetics]

This 125 MHz benchtop NMR spectrum of cocaine was acquired with a total sample volume of 5.1 µL and less than 100 µg of analyte. It takes advantage of the QM-125's 20 nM limit of detection, combined with its high resolution and highest-available magnetic field. Mass-limited applications for benchtop NMR are diverse, including the analysis of controlled substances, metabolic products, plant extracts, insect secretions and chromatographic fractions. See our previous neat CHCl3 post illustrating the limit of detection. @QMagnetics will be at ACS Spring 2026 in Atlanta, come visit booth #1325

#ACS #ACSSpring2026 #ACS150 #NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Cocaine #Smallvolume #Totalsamplevolume #Microliter #Nanomolar #SmallvolumeNMR #Resolution #Dispersion #Limitofdetection #Masslimited #Controlledsubstance #Metabolic #Metabolism #Plants #Insects #Chromatography #Chemistry #Organicchemistry #Analyticalchemistry #Forensic #Forensicscience

[John Price @JPricePhysics]

I’ll be at the Spring ACS meeting in Atlanta with Q Magnetics, so please stop by booth #1325 if you would like to chat. #NMRChat

[Q Magnetics @QMagnetics]

This 125 MHz NMR spectrum of quinine was acquired using a total sample volume of only 5.5 µL and just 552 nmol of analyte. This is roughly 200 times less analyte than is typically required. Despite the small sample volume, the spectrum demonstrates state-of-the-art resolution and the highest available dispersion for benchtop NMR. Quinine, a natural alkaloid, is historically significant for its use in treating malaria and in the early development of antimalarial therapies.

@QMagnetics will be at ACS spring 2026! Booth #1325

#ACSSpring2026 #ACS #ACS150 #NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Quinine #Smallvolume #Totalsamplevolume #Microliter #Nanomole #SmallvolumeNMR #Resolution #Dispersion #Alkaloid #Malaria #Antimalarial #Chemistry #Organicchemistry #Analyticalchemistry #Smallvolumechemistry

[Q Magnetics @QMagnetics]

On the QM-125 benchtop NMR, reserpine displays a complex ¹H NMR spectrum with aromatic, methoxy, and aliphatic resonances arising from its multi-ring indole alkaloid framework. These clearly defined signals reflect its stereochemically rich structure. Reserpine was one of the first effective oral treatments for hypertension and marked a major advance in cardiovascular medicine. It also became an important early therapy in the treatment of psychiatric disorders.

@QMagnetics will be at ACS spring 2026! Come check out our booth to learn more about benchtop NMR at 125 MHz. #ACSSpring2026 #ACS

#NMR #NMRchat #BenchtopNMR #QM125 #NMRspectroscopy #Reserpine #Indole #Alkaloid #Stereochemistry #Cardiovascular #Hypertension #Treatment #Psychiatric #CHEMISTRY #Organicchemistry #Analyticalchemistry