Natural alkaloids from narrow-leaf and yellow lupins transfer to soil and soil solution in agricultural fields

Environmental Sciences Europe

Table 1 Physical–chemical properties of selected alkaloids quantified in this study

	Angustifoline	Cytisine	Gramine	Hydroxylupanine	Lupanine	Lupinine	Matrine	Sparteine

CAS number	550-43-6	485-35-8	87-52-5	15358-48-2	550-90-3	486-70-4	519-02-8	90-39-1
Nominal mass [Da]	234.3	190.2	174.2	264.4	248.4	169.3	248.4	234.4
Molecular formula	C₁₄H₂₂N₂O₁	C₁₁H₁₄N₂O	C₁₁H₁₄N₂	C₁₅H₂₄N₂O₂	C₁₅H₂₄N₂O	C₁₀H₁₉N₁O₁	C₁₅H₂₄N₂O	C₁₅H₂₆N₂
Water solubility [g/L]^a	9.9	15.1	3.2	21.8	8.1	13.6	0.8	3.0
log Kow^a	2.2	0.6	1.5	0.2	1.7	1.6	1.7	2.7
pK^b_a	10.3	10.9	7.9	8.8	9.4	9.4	9.4	12