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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 178955831Generated: October 23, 2026

4a-Hydroxy Ivermectin

Ivermectin 4a-Hydroxy · 4a-Hydroxy Ivermectin · 4α-hydroxy ivermectin · Ivermectin impurity 22 · Ivermectin Impurity 22 (4a-Hydroxy Ivermectin) · Avermectin A1a, 5-O-demethyl-22,23-dihydro-26-hydroxy- (9CI)

https://huagongshe.com/en/chemical/178955831

4a-Hydroxy Ivermectin molecular structure

Identifiers & Physical Properties

CAS No.86629-74-5
Molecular formulaC48H74O15
Average molar mass891.09 g/mol

Chemical & Physical Properties

Boiling point970.2±65.0 °C(Predicted)
Density1.26±0.1 g/cm3(Predicted)
SolubilityChloroform (Slightly), Methanol (Slightly)
Physical stateSolid
pKa (acidity coefficient)12.28±0.70(Predicted)
ColorPale Yellow
StabilityHygroscopic

Applications & Uses

Uses

4a-Hydroxy Ivermectin is an impurity of Ivermectin (I940800), an antiparasitic drug that is active against a wide variety of nematode and arthropod parasites and is used to treat scabies and lice in humans. An invitro inhibitor of SARS-CoV-2/ Covid-19.