Data Item _chem_comp.formula_weight
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General 
- Item name
- _chem_comp.formula_weight
- Category name
- chem_comp
- Attribute name
- formula_weight
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 100.0 % of entries
- Used in the Chemical Component dictionary
- Yes
Item Description
Formula mass in daltons of the chemical component.
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 1.0 | +∞ |