NMR Solvent Peaks3.0 - App Store

NMR Solvent Peaks is a conveniently-searchable version of the ungainly table of NMR data most organic chemists keep a copy of nearby. Instead of searching through the table for a peak near your unidentified peak, just enter your solvent and the peak's multiplicity and location and you'll have a short list of candidate impurities.

NMR Solvent Peaks has support for searching both proton and carbon data, and references the widely-distributed 2010 Organometallics paper by Gregory Fulmer and coworkers and the 2016 OPRD paper by Gregory Whiteker and coworkers.

Feature Highlights:
- search for impurities based upon mode (proton/carbon), deuterated solvent, multiplicity, and ppm
- select "show all" for ppm to see an alphabetical list of all impurities in the app's database
- pick a color theme and adjust the user interface handedness

Version History A fresh coat of paint for version 3.0!
– redesigned, customizable user interface (nerds: it's all SwiftUI in there!)
– supports automatic dark mode switching
– re-worked ppm entry
– simplified settings screen 3.0 02/07/2023 New in this version:
– Lots of new color options for the theme
– Refreshed some old color options, retired some others
– Nuts and bolts adjustments under the hood
– Now requires iOS 12.4 or newer 2.7 02/19/2022 New in this version:
– added additional impurities (thanks, Olie!) 2.6 01/25/2022 New in this version:
– bug fixes, improvements under the hood 2.5 12/23/2021 New in this version:
– minor user interface adjustments 2.4 12/22/2021 New in this version:
– updated for iOS 15 and new devices 2.3 09/25/2021 New in this version:
– swatted down a few bugs
– adjusted some things under the hood 2.2 02/12/2021 New in this version:
- new color option
- some adjustments under the hood 2.1 07/13/2020 Version 2.0 comes with a brand-new user interface:
- Select mode, solvent, and multiplet from popup menus
- Select ppm by typing in a number
- Adapts to portrait and landscape, and looks great on iPad

A few small changes from 1.6:
- Tweaked the settings screen
- Re-worked a few of the theme color options

Thanks again to user / typo sniper Patrick for feedback. 2.0 04/25/2020 New in this version:
- fixed a bug with chemical names containing subscripts 1.6.2 12/12/2019 New in this version:
- fixed a layout bug on larger-screen iPhones
- made some changes under the hood
- fixed a few typos. It's n-heptane, not n-heptate. 1.6.1 11/09/2019 New in this version:
- Big improvements to iPad version. New layout and controls when space permits, but shrinks down to iPhone-style controls otherwise. 1.6 09/19/2019 New in this version:
- Peak graphics overhaul. Should look a lot nicer now.
- Added DMSO to the database as a potential impurity (Thanks, Patrick!)
- iOS 11.4 or later required 1.5 04/10/2019 New in this version:
- iPhone XS Max and iOS 12 compatibility
- iPad compatibility (no more gross 2x mode!)
- Graphics tweaks
- Improved VoiceOver compatibility 1.4 01/28/2019 New in this version:
- The Process Update: find peaks for process chemistry-friendly impurities like MEK, CPME, and the light alcohol acetates.
- Search results with too many peaks for narrow screens are now visible by scrolling to the right 1.3 06/16/2018 New in this version:
- View all impurities: select "?" in the ppm field to show a list of all impurities in the database.
- Colorful themes: if you don't like the default grey-and-white, choose "Themes" in the settings page to find more options. 1.2 05/26/2018 - Fixed a bug where user-reordering of solvents could be reset to default value
- Fixed a bug where excluded search results list could be reset to default value
- Fixed a typo that caused searches with chlorobenzene to return no results 1.1 11/11/2017 1.0 11/03/2017