Modeling 

Parent concept

Most distal appropriate descendant of 105590001 |Substance (substance)|

Semantic tag

(substance)

Definition status

Primitive

Attribute

738774007 |Is modification of (attribute)| relationship to the unspecified substance

726542003 |Has disposition (attribute)| as appropriate

Hydrates

Hydates are modeled with an Is modification of (attribute) relationship to the unspecified substance. 

For example,

Naming Guidelines

FSN

Pattern:

  • X hydrate (substance)
  • X dihydrate (substance)
  • X monohydrate (substance)

  • Example:

  • Copper sulfate pentahydrate (substance)

Preferred Term

Pattern:

    • X hydrate
    • X dihydrate
    • X monohydrate

Example:

  • Copper sulfate pentahydrate

Exemplar

The following illustrates the inferred view.

 Caffeine hydrate (substance) IS MODIFICATION OF Caffeine (substance)

Anhydrous compounds

Anhydrous compounds have an IS MODIFICATION OF (attribute) relationship to the unspecified substance, i.e. where the level hydration is not specified.

For example,

Naming Guidelines

FSN

Pattern:

  • X anhydrous (substance)

Example:

  • Theophylline anhydrous (substance)

Preferred Term

Pattern:

  • X anhydrous

Example:

  • Theophylline anhydrous

Synonyms

Pattern: Anhydrous X

Exemplar

The following illustrates the inferred view.

Theophylline anhydrous (substance) IS MODIFICATION OF Theophylline (substance)