----- For naturally occurring isotopes version -----

[See help in detail]

Some sample of syntax for molecular formula:

1. CuSO4.5H2O; CH3(CH2)9COOH; PhOH; AcOEt (The Periodic Table shows the elements supported; The Symbols of Groups supported. Add your Groups! )

2. Gly-Ile-Ala-Thr-Asp; GlyIleAlaThrAsp----   (The symbols of Amino Acid supported)

3. [13C]6H5OH; C6H5[13C]6H4[19F]    ( [13C] presents 13C(isotope); [19F] presents 19F(isotope); It just supports naturally occurring isotopes. If you want to calculate all possible isotopes, please click here.)

Low Resolution                  High Resolution

Show peaks from mass value to . (Optional) Some mass peaks which relative abundances are more than 1% more than 0.1% more than 0.01% more than 0.001% more than 0.0001% not 0 Set decimal places for the exact  mass in the data table = 0 1 2 3 4 5 6 7 8 9 * Set tags for all  peaks  = Exact mass and relative abundance Only exact mass Only relative abundance Only tag of the biggest in overlapping peaks No tag * Set offset of the up-down position of  tags  =  * (Increase this value, the tags will move down; Decrease this value,  the tags will move up.)   Set offset of the left-right position of  tags  =  * (Increase this value, the tags will move right; Decrease this value,  the tags will move left.)

*: The items are just for high resolution.

1. if you want to calculate molecular weight online, please click here.

2. Molecular weight Calculator for Windows 9X, Windows Me, Windows NT, Windows 2000 and Windows XP, click here to download it.

3. You have print problem?  Please click here for help.

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