S3 Recoveries of 13C10-labeled standards for PCNs Recovery of surrogate standard Surrogate standard Mean 13C10-CN-27 60.8-121% 93.7% 13C10-CN-42 56.1-131% 90.5% 13C10-CN-52 44.2-118% 72.0% 37.2-98.8% 55.5% 13C10-CN-73 48.2-125% 82.1% 13C10-CN-75 36.0-129% 67.1%
S3 Recoveries of 13C10-labeled standards for PCNs Surrogate standard Recovery of surrogate standard Mean 13C10-CN-27 60.8-121% 93.7% 13C10-CN-42 56.1-131% 90.5% 13C10-CN-52 44.2-118% 72.0% 37.2-98.8% 55.5% 13C10-CN-73 48.2-125% 82.1% 13C10-CN-75 36.0-129% 67.1%
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