Methanol meoh of hplc grade

Methanol (MeOH) of HPLC grade was obtained from Merck KGaA (Darmstadt, Germany). Formic acid (HCOOH), acetic acid (CH₃COOH), and 8-OHdG were bought from Sigma-Aldrich (St Louis, MO, USA). [¹⁵N₅]8-Hydroxy-2′-deoxyguanosine ([¹⁵N₅]8-OHdG) was purchased from Cambridge Isotope Laboratories Inc. (Andover, MA, USA). 8-OHG and [¹³C¹⁵N₂]8-hydroxyguanosine ([¹³C¹⁵N₂]8-OHG) were bought from Toronto Research Chemical (Toronto, Canada). Water was gained from a Milli-Q water purification apparatus (Millipore, Milford, MA, USA).

Methanol (MeOH) of HPLC grade, 2-picolylamine
(2-PA), dipyridyl disulfide (DPDS), triphenylphosphine (TPP), acetic
acid, propionic acid, butyric acid, valeric acid, caproic acid, lactic
acid, succinic acid, isobutyric acid, isovaleric acid, 2-methylbutyric
acid, 3,3-dimethylbutyric acid, 2-methylvaleric acid, 3-methylvaleric
acid, 4-methylbutyric acid, indole-3-acetic acid, indole-3-butyric
acid, indole-3-lactic acid, 2-ethylbutyric acid (2-EtB), d⁴-acetic acid, glucose, galactose, fructose, arabinose, fucose, rhamnose,
glucuronic acid, galacturonic acid, Nacetylglucosamine, N-acetylgalactosamine, mannose, allose, ribose, 3-methyl-1-phenyl-2-
pyrazoline-5-one (PMP), trifluoroacetic acid (TFA), and ammonium acetate
were purchased from Sigma-Aldrich (St. Louis, MO). d²-indole-3-propionic
acid was purchased from Toronto Research Chemicals (Toronto, Canada).
Algal starch (U–¹³C, 98%+), ¹³C₆ glucose, and unlabeled algal starch were purchased from Cambridge
Isotope Laboratories (Tewksbury, MA). Isopropanol of LC/MS grade was
purchased from Fisher Scientific (Waltham, MA). Acetonitrile (HPLC-grade)
was purchased from Honeywell (Muskegon, MI).