Hupeheninoside

Formula : C33-H55-N-O7
CAS : 98985-22-9 

Isolated from Fritillaria hupehensis.

Huperzine B

Formula : C16-H20-N2-O
CAS : 103548-82-9 

Chinese drug isolated from Huperzia serrata; also isolated from Phlegmariurus fordii.

Huperzinine

Formula :
CAS : 119188-49-7 

From Huperzia serrata.

hupF protein, Rhizobiales

Formula : C456-H741-N129-O137-S6
CAS : 147416-35-1 

Has hydrogenase activity; identified in Rhizobium leguminosarum and Bradyrhizobium japonicum.

hupR1 protein, Rhodobacter capsulatus

Formula :
CAS : 144131-07-7 

Hydrogenase transcriptional regulatory protein; from Rhocobacter capsulatus; response regulator of the NtrC family required for hydrogenase expression; in conjunction with sigma-54, hupR1 acts a transcriptional activator; GenBank M63670.

Huratoxin

Formula : C34-H48-O8
CAS : 33465-16-6 

From desert rice flower, Pimelea simplex.

Hurin protein, Hura crepitans

Formula : Unspecified
CAS : 1391-96-4 

Potent lymphocyte mitogen from seed of Hura crepitans.

Huwentoxin I

Formula :
CAS : 153190-94-4 

Isolated from the Chinese bird spider Selenocosmia huwena.