tree section heading for terms covering drugs, reagents, biomolecules, and other chemical compounds.
http://purl.bioontology.org/ontology/CSP/4000-0145
C0220806
4000-0145
http://purl.bioontology.org/ontology/CSP/2301-8768
http://purl.bioontology.org/ontology/CSP/4000-0332
http://purl.bioontology.org/ontology/CSP/0631-3572
http://purl.bioontology.org/ontology/CSP/0628-6072
http://purl.bioontology.org/ontology/CSP/0962-5347
http://purl.bioontology.org/ontology/CSP/1626-5132
http://purl.bioontology.org/ontology/CSP/4000-0118
http://purl.bioontology.org/ontology/CSP/2077-7189
http://purl.bioontology.org/ontology/CSP/4000-0277
http://purl.bioontology.org/ontology/CSP/2842-2775
http://purl.bioontology.org/ontology/CSP/0630-2818
http://purl.bioontology.org/ontology/CSP/1568-6408
http://purl.bioontology.org/ontology/CSP/0631-2320
http://purl.bioontology.org/ontology/CSP/1010-1403
http://purl.bioontology.org/ontology/CSP/0631-2946
http://purl.bioontology.org/ontology/CSP/0631-3259
http://purl.bioontology.org/ontology/CSP/5006-0014
http://purl.bioontology.org/ontology/CSP/0704-2480
chemical
T103
http://www.w3.org/2002/07/owl#Thing