. Author manuscript; available in PMC: 2015 May 21.

Published in final edited form as: Anal Chem. 2014 Feb 5;86(4):2221–2228. doi: 10.1021/ac403879d

Table 2.

Fragments of TMS-Derivatized Compounds Part 2

compound	m/z	m/z ¹³C	m/z d₉-TMS	formula
glutamic acid 3TMS	363	368	390	C₁₄H₃₃NO₄Si₃
	348	353	372	C₁₃H₃₀NO₄Si₃
	320	324	344	C₁₂H₃₀NO₃Si₃
	246	250	264	C₁₀H₂₄NO₂Si₂
	230	234	245	C₉H₂₀NO₂Si₂
glutamine 3TMS	362	367	389	C₁₄H₃₄N₂O₃Si₃
	347	352	371	C₁₃H₃₁N₂O₃Si₃
	273	278	291	C₁₁H₂₅N₂O₂Si₂
	245	249	263	C₁₀H₂₅N₂O₁Si₂
glycerol 3TMS	308	–	–	C₁₂H₃₂O₃Si₃
	293	296	317	C₁₁H₂₉O₃Si₃
	218	221	236	C₉H₂₂O₂Si₂
	205	207	223	C₈H₂₁O₂Si₂
glycine 3TMS	291	293	–	C₁₁H₂₉NO₂Si₃
	276	278	300	C₁₀H₂₆NO₂Si₃
	248	249	274	C₉H₂₆NOSi₃
	174	175	192	C₇H₂₀NSi₂
isoleucine 2TMS	275	–	–	C₁₂H₂₉NO₂Si₂
	260	265, 266	275, 278	C₁₁H₂₆NO₂Si₂
	232	237	247	C₁₀H₂₆NOSi₂
	218	220	236	C₈H₂₀NO₂Si₂
	158	163	167	C₈H₂₀NSi
leucine 2TMS	275	–	–	C₁₂H₂₉NO₂Si₂
	260	265, 266	275, 278	C₁₁H₂₆NO₂Si₂
	232	237	247	C₁₀H₂₆NOSi₂
	218	220	236	C₈H₂₀NO₂Si₂
	158	163	167	C₈H₂₀NSi
lysine 3TMS	362	368	389	C₁₅H₃₈N₂O₂Si₃
	347	353	371	C₁₄H₃₅N₂O₂Si₃
	200	206	209	C₉H₁₈NO₂Si
	174	175	192	C₇H₂₀NSi₂
	156	161	165	C₈H₁₈NSi
lysine 4TMS	434	440	470	C₁₈H₄₆N₂O₂Si₄
	419	425	452	C₁₇H₄₃N₂O₂Si₄
	391	396	324	C₁₆H₄₃N₂OSi₄
	317	322	344	C₁₄H₃₇N₂Si₃
	174	175	192	C₁₇H₂₀NSi₂
malic acid 3TMS	350	354	377	C₁₃H₃₀O₅Si₃
	335	339	359	C₁₂H₂₇O₅Si₃
	307	311	331	C₁₁H₂₇NO₄Si₃
	245	249	260	C₉H₁₇O₄Si₂
	233	236	251	C₉H₂₁O₃Si₂