The help for molecular weight calculator v2.0

1. Calculating the molecular weight, molecular mass and percentage compositions. The punctuations are not supported except "(",")","." and "-". One "-" indicates to minus one H₂O from molecular formula. In that case, "-" can be showed in anywhere in the molecular formula. The following examples are correct.

• CuSO4.5H2O, CH3CH2CH2CH2N(CH3)N(CH3)COOH.6H2O.2HCl
• CH3(CH2)9COOH
• PhOH, MeOH, AcOEt  (Click here to see groups which are supported by this software)
• Gly-Ile-Ala-Thr-Asp, GlyIleAlaThrAsp----, AcO-Gly-Ile-Ala-Thr-Asp-COCH3 (Click here to see amino acids which are supported by this software)

2. Querying the basic properties of element, periodic table and amino acids list.

• Enter "pt" or "PT" to show periodic table.
• Enter "aa" or "AA" to show amino acids list.
• If you want to query a element or some elements, you should enter "#" at first. such as "#Mg","#1,3,6-78,P".
• Enter "#IIA" or "IIA" or "iia" to show second main group elements. Enter "#IIB" or "IIA" or "iia" to show second subgroup B elements. (IA,IIA,IIIA,VIA,VA,VIA,VIIA,VIIIA,IB,IIB,IIIB,VIB,VB,VIB,VIIB,VIIIB,)