Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
WolframChemistry`ChemistryFunctions`
ChemicalFormulaQ  |
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Details and Options
Examples
(3)
Basic Examples
(2)
A string is not a valid ChemicalFormula object:
In[1]:=
 | ChemicalFormulaQ |
Out[1]=
False
In[2]:=
| ChemicalFormulaQ |
C
H
3
Out[2]=
True
When given invalid input, will return unevaluated, as is common in Wolfram Language functions:
In[1]:=
form1=ChemicalFormula["X^n"]
Out[1]=
ChemicalFormula[X^n]
In[2]:=
form2=ChemicalFormula["C6H5CH[CH(CH3)N(CH3)2]OH"]
Out[2]=
C
6
H
5
H
3
(C)
H
3
2
In[3]:=
MatchQ[#,_ChemicalFormula]&/@{form1,form2}
Out[3]=
{True,True}
Use a PatternTest to differentiate valid from invalid chemical formulas:
In[4]:=
MatchQ#,_?
&/@{form1,form2}
 | ChemicalFormulaQ |
Out[4]=
{False,True}
Applications
(1)
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