Shift: NMR Chemical Shift Interpretation

This application uses chemical shift substituent constants to predict the chemical environment for your input chemical shift. Only aliphatic shifts are available. Because many substituent constants are similar, many different substitutent patterns will give the same chemical shift. Therefore, one chemical shift will match many possible chemical environments. To decrease the number of possible substituents, information from IR and mass spectrometry are necessary. Fill in as many of the fields below as you can. The more information you provide, the more likely you are to receive a unique result. If you don't know, leave the field blank.

From Mass Spectrometry and Elemental Analysis:
The molecular weight helps to determine how many substituents to look for. But, the molecular weight is only helpful for small molecules.
Molecular Weight: +-2amu
Formula: C H N O F Cl Br I S
(for formulas you can enter a ">" or "<" in front of the number, eg. >2)

From IR and MS Spectroscopy:
Chemical Types:
Type:AbsentNear
Carbonyl
Alkene
Aromatic
Alkyne
C-O-
OH or NH
Carbonyl types:
Type:AbsentNear
aldehyde
ketone
conjugated-ketone
carboxylic acid
ester
amide

From NMR Multiplicity and Integration:
Look for substitution type with multiplicity.
My proton(s) is part of an isolated group.
If my shift is from a -CH2- group the two protons are

NMR Chemical Shift:
Your chemical shift: ppm +-

Here are some possible environments:

Key to the Literature References