| Chromatographic Method | Retention Time | Reference |
|---|
| Predicted by Siyang on May 30, 2022 | 8.6034 minutes | 33406817 |
| Predicted by Siyang using ReTip algorithm on June 8, 2022 | 6.41 minutes | 32390414 |
| Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 455.4 seconds | 40023050 |
| Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 334.6 seconds | 40023050 |
| Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 54.8 seconds | 40023050 |
| Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 226.6 seconds | 40023050 |
| RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 75.7 seconds | 40023050 |
| Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 271.7 seconds | 40023050 |
| BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 232.4 seconds | 40023050 |
| HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 730.8 seconds | 40023050 |
| UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 567.5 seconds | 40023050 |
| BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 35.3 seconds | 40023050 |
| UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 605.3 seconds | 40023050 |
| SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 201.3 seconds | 40023050 |
| RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 291.9 seconds | 40023050 |
| MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 703.0 seconds | 40023050 |
| KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 483.7 seconds | 40023050 |
| Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 252.9 seconds | 40023050 |
| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| N-Ethylguanidine,1TMS,isomer #1 | CCNC(=N)N[Si](C)(C)C | 1414.3 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #1 | CCNC(=N)N[Si](C)(C)C | 1053.7 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #1 | CCNC(=N)N[Si](C)(C)C | 2225.3 | Standard polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C | 1350.6 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C | 1129.2 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C | 2118.3 | Standard polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #3 | CCNC(N)=N[Si](C)(C)C | 1284.3 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #3 | CCNC(N)=N[Si](C)(C)C | 1086.1 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TMS,isomer #3 | CCNC(N)=N[Si](C)(C)C | 1983.6 | Standard polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C)[Si](C)(C)C | 1416.8 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C)[Si](C)(C)C | 1261.4 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C)[Si](C)(C)C | 1910.1 | Standard polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #2 | CCNC(=N[Si](C)(C)C)N[Si](C)(C)C | 1395.2 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #2 | CCNC(=N[Si](C)(C)C)N[Si](C)(C)C | 1175.2 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #2 | CCNC(=N[Si](C)(C)C)N[Si](C)(C)C | 2006.9 | Standard polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #3 | CCNC(=N)N([Si](C)(C)C)[Si](C)(C)C | 1473.6 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #3 | CCNC(=N)N([Si](C)(C)C)[Si](C)(C)C | 1215.4 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #3 | CCNC(=N)N([Si](C)(C)C)[Si](C)(C)C | 1923.6 | Standard polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C)[Si](C)(C)C | 1402.4 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C)[Si](C)(C)C | 1231.5 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C)[Si](C)(C)C | 1960.1 | Standard polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N[Si](C)(C)C)[Si](C)(C)C | 1405.7 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N[Si](C)(C)C)[Si](C)(C)C | 1276.5 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N[Si](C)(C)C)[Si](C)(C)C | 1749.0 | Standard polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1421.0 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1426.4 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1750.2 | Standard polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #3 | CCNC(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1421.4 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #3 | CCNC(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1292.9 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TMS,isomer #3 | CCNC(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1782.0 | Standard polar | 33892256 |
| N-Ethylguanidine,4TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1518.9 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,4TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1461.6 | Standard non polar | 33892256 |
| N-Ethylguanidine,4TMS,isomer #1 | CCN(C(=N[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C | 1512.4 | Standard polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #1 | CCNC(=N)N[Si](C)(C)C(C)(C)C | 1601.0 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #1 | CCNC(=N)N[Si](C)(C)C(C)(C)C | 1224.4 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #1 | CCNC(=N)N[Si](C)(C)C(C)(C)C | 2278.3 | Standard polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C(C)(C)C | 1522.1 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C(C)(C)C | 1313.0 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #2 | CCN(C(=N)N)[Si](C)(C)C(C)(C)C | 2253.3 | Standard polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #3 | CCNC(N)=N[Si](C)(C)C(C)(C)C | 1491.0 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #3 | CCNC(N)=N[Si](C)(C)C(C)(C)C | 1249.7 | Standard non polar | 33892256 |
| N-Ethylguanidine,1TBDMS,isomer #3 | CCNC(N)=N[Si](C)(C)C(C)(C)C | 2163.1 | Standard polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1813.8 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1656.5 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #1 | CCN(C(=N)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2034.6 | Standard polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #2 | CCNC(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 1822.9 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #2 | CCNC(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 1497.1 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #2 | CCNC(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 2031.4 | Standard polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #3 | CCNC(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1814.5 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #3 | CCNC(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1595.8 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #3 | CCNC(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2027.6 | Standard polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1780.4 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1608.7 | Standard non polar | 33892256 |
| N-Ethylguanidine,2TBDMS,isomer #4 | CCN(C(N)=N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2149.4 | Standard polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2008.8 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1864.7 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1999.4 | Standard polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2036.8 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2043.1 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #2 | CCN(C(=N)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2036.4 | Standard polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #3 | CCNC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2010.4 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #3 | CCNC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1853.2 | Standard non polar | 33892256 |
| N-Ethylguanidine,3TBDMS,isomer #3 | CCNC(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2003.4 | Standard polar | 33892256 |
| N-Ethylguanidine,4TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2293.4 | Semi standard non polar | 33892256 |
| N-Ethylguanidine,4TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2228.3 | Standard non polar | 33892256 |
| N-Ethylguanidine,4TBDMS,isomer #1 | CCN(C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1959.1 | Standard polar | 33892256 |