| Allowed Value | Details | 
|---|---|
| n | abbreviation for "no" | 
| no | polymer contains no nonstandard monomers | 
| y | abbreviation for "yes" | 
| yes | polymer contains at least one nonstandard monomer | 
| Allowed Value | Details | 
|---|---|
| n | abbreviation for "no" | 
| no | polymer contains no nonstandard monomers | 
| y | abbreviation for "yes" | 
| yes | polymer contains at least one nonstandard monomer |