REAGENT or RESOURCE	SOURCE	IDENTIFIER
Chemicals, peptides, and recombinant proteins
U-13C-15N-cysteine	Cambridge Isotope Laboratories	Cat# CNLM-3871-H-PK
U-13C-15N-cystine	Cambridge Isotope Laboratories	Cat# CNLM-4244-H-PK
2×13C-U-15N-glutathione	Cambridge Isotope Laboratories	Cat# CNLM-6245-HP-PK
4×13C-U-15N-glutathione disulfide	Cambridge Isotope Laboratories	Cat# CNLM-8782-PK
Benzyl choloroformate	ACROS ORGANICS	Cat# 152945000
0.5M EDTA	Lonza	Cat# 51234
Acetonitrile HPLC grade	Sigma-Aldrich	Cat# 439134-1L
Methanol HPLC grade	Sigma-Aldrich	Cat# 34860-1L-R
Formic Acid	Sigma-Aldrich	Cat# 33015-500ML
Dialyzed Fetal Bovine Serum	Sigma-Aldrich	Cat# F0392
KL-11743	Kadmon Corporation	N/A
DMEM without glucose	Thermo Fisher Scientific	Cat# 11966
Penicillin-Streptomycin	Life Technologies	Cat# 15140-122
DMEM	Sigma-Aldrich	Cat# D6429
0.25% Trypsin EDTA	Life Technologies	Cat# 25200056
DPBS	Sigma-Aldrich	Cat# D8537
Water LC-MS grade	Fisher Scientific	Cat# W64
Methanol LC-MS grade	Fisher Scientific	Cat# A456-4
Tributylamine	Sigma-Aldrich	Cat# 90781
Acetic acid LC-MS grade	Fisher Scientific	Cat# A11350
Hydrochloric acid	Fisher Scientific	Cat# A508
Triethylamine	Fisher Scientific	Cat# AC219510500
Negative Ion Calibration Solution	Thermo Fisher Scientific	Cat# 88324
Experimental models: Cell lines
UMRC6	Laboratory of W. G. Kaelin Lab	N/A
Software and algorithms
GraphPad	GraphPad	https://www.graphpad.com, RRID:SCR_002798
Xcalibur 3.0.63	Thermo Scientific	https://www.thermofisher.com/, RRID:SCR_014593
El-MAVEN	Elucidata	https://resources.elucidata.io/elmaven
ProteoWizard	SourceForge	https://proteowizard.sourceforge.io/index.shtml
Other
Refrigerated micro-centrifuge	Eppendorf	Cat# EPP-5424R
CO2 Incubator	Thermo Scientific	Cat# TH-370N
BSC Cabinet	NuAire	Cat# ES NU-427
Plate Rocker	Corning	Cat# 6780-FP
PCV Cell Counting Tubes	Sigma-Aldrich	Cat# Z760986-50EA
Plastic Cell Scrapers	Corning	Cat# 08-771-1B
Cold Block	Thermo Scientific	Cat# 88-870-104
Eppendorf tubes	Thermo Scientific	Cat# MCT-175C
35 mm dish	Thermo Scientific	Cat# 353001
Synergi Hydro-RP C18 column	Phenomenex	Cat# 00D-4387-B0
Autosampler vials	Thermo Scientific	Cat# 03-377-299
Autosampler vial caps	Thermo Scientific	Cat# 14-823-399