HPLC–HR-ESI–MS/MS identification of fluorescent dyes and optical brighteners and their degradation products in daylight fluorescent paints

Reiß, Lukas; Machill, Susanne; Lübken, Tilo; Herm, Christoph

doi:10.1186/s40494-023-00993-6

Heritage Science

Table 2 Degradation products of BV11 found with HPLC–HR-MS

From: HPLC–HR-ESI–MS/MS identification of fluorescent dyes and optical brighteners and their degradation products in daylight fluorescent paints

Peak label	Exact mass	Molecular formula	Abundance	Degradation type
a	471.2642	C₃₀H₃₅N₂O₃⁺		Starting substance
b	457.2486	C₂₉H₃₃N₂O₃⁺	+	Dealkylation/impurity
c, d	443.2329	C₂₈H₃₁N₂O₃⁺	++	N-deethylation
e	429.2173	C₂₇H₂₉N₂O₃⁺	+	Dealkylation/impurity
f, g	415.2016	C₂₆H₂₇N₂O₃⁺	++	N-deethylation
h	401.1860	C₂₅H₂₅N₂O₃⁺	+	Dealkylation/impurity
i	387.1703	C₂₄H₂₃N₂O₃⁺	++	N-deethylation
j	373.1547	C₂₃H₂₁N₂O₃⁺	+	Dealkylation/impurity
k	359.1390	C₂₂H₁₉N₂O₃⁺	++	N-deethylation
l	345.1234	C₂₁H₁₇N₂O₃⁺	+	Dealkylation/impurity
m	331.1077	C₂₀H₁₅N₂O₃⁺	+	Deethylation
	487.2591	C₃₀H₃₅N₂O₄⁺	+	Hydroxylation
	459.2278	C₂₈H₃₁N₂O₄⁺	+	Hydroxylation/N-deethylation
	445.2122	C₂₇H₂₉N₂O₄⁺	+	Hydroxylation/dealkylation
	431.1965	C₂₆H₂₇N₂O₄⁺	+	Hydroxylation/N-deethylation
	403.1652	C₂₄H₂₃N₂O₄⁺	+	Hydroxylation/N-deethylation
	389.1496	C₂₃H₂₁N₂O₄⁺	+	Hydroxylation/dealkylation
	375.1339	C₂₂H₁₉N₂O₄⁺	+	Hydroxylation/N-deethylation
n	457.2122	C₂₈H₂₉N₂O₄⁺	++	Oxidation/N-deethylation
	443.1965	C₂₇H₂₇N₂O₄⁺	+	Oxidation/dealkylation
o	429.1809	C₂₆H₂₅N₂O₄⁺	+	Oxidation/N-deethylation
	415.1652	C₂₅H₂₃N₂O₄⁺	+	Oxidation/dealkylation
p, q	401.1496	C₂₄H₂₁N₂O₄⁺	+	Oxidation/N-deethylation
r	387.1339	C₂₃H₁₉N₂O₄⁺	+	Oxidation/dealkylation
	501.2384	C₃₀H₃₃N₂O₅⁺	+	Oxidation
	473.2071	C₂₈H₂₉N₂O₅⁺	+	Oxidation/N-deethylation
s, t	443.1601	C₂₆H₂₃N₂O₅⁺	+	Oxidation/N-deethylation

Abundance: + minor, ++ major

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