Only six alkaloids, namely protopine, allocryptopine, corydaline, d-stylopine, dl-tetrahydropalmatine, and aurotensine, could be isolated from this plant. The total yield of alkaloids was approximately 0.06%. Chemically, the plant is closely allied with Corydalis ambigua and both had been relegated to the same botanical section of the genus.
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Richard H. F. Manske (1956) studied this question.