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Exact Mass (Da) or m/z*
Tolerance (±)
ppm
Da
Charge
positive
negative
neutral
Adducts
[M+H]+
[M+NH4]+
[M+Na]+
[M+K]+
[M+H-H2O]+
[M+H-2H2O]+
[M+CH3OH+H]+
[M+CH3CN+H]+
[2M+H]+
[2M+NH4]+
[2M+Na]+
[2M+K]+
[M-H]-
[M-H-H2O]-
[M+HCOOH-H]-
[M+CH3COOH-H]-
[2M-H]-
[2M+HCOOH-H]-
[2M+CH3COOH-H]-
[3M-H]-
Database
DeepMet only
DeepMet + HMDB
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