| Chromatographic Method | Retention Time | Reference |
|---|
| Predicted by Siyang on May 30, 2022 | 9.3722 minutes | 33406817 |
| Predicted by Siyang using ReTip algorithm on June 8, 2022 | 6.23 minutes | 32390414 |
| Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 519.9 seconds | 40023050 |
| Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 196.0 seconds | 40023050 |
| Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 100.0 seconds | 40023050 |
| Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 163.6 seconds | 40023050 |
| RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 52.1 seconds | 40023050 |
| Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 258.2 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 | 285.9 seconds | 40023050 |
| HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 904.0 seconds | 40023050 |
| UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 579.6 seconds | 40023050 |
| BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 69.2 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 | 762.4 seconds | 40023050 |
| SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 204.2 seconds | 40023050 |
| RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 227.8 seconds | 40023050 |
| MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 529.2 seconds | 40023050 |
| KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 691.9 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 | 326.5 seconds | 40023050 |
| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 3614.1 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 3339.7 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 5754.6 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 3479.1 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 3274.1 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 5671.9 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 3407.5 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 3269.4 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 5543.2 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C)[Si](C)(C)C | 3658.8 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C)[Si](C)(C)C | 3434.6 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C)[Si](C)(C)C | 5471.0 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 3462.4 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 3343.0 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C | 5188.6 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 3418.6 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 3354.5 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C | 5093.3 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 3295.7 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 3282.7 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 5130.0 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3557.6 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3449.0 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 4851.9 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3493.1 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3463.3 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 4819.4 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 3307.0 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 3368.4 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C | 4503.5 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3430.6 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 3479.7 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 4273.8 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 3857.6 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 3547.8 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #1 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1 | 5636.5 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 3687.2 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 3474.3 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #2 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 5554.9 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 3713.4 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 3478.9 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,1TBDMS,isomer #3 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 5500.7 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4106.0 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3811.4 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 5328.3 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 3896.5 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 3716.0 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #2 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C | 5012.7 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 3952.7 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 3750.9 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C | 4998.0 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3767.3 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3655.5 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,2TBDMS,isomer #4 | CN1C=NC=C1CC(N)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4998.1 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4176.7 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3953.1 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4736.4 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4230.1 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3989.8 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #2 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)NC(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4743.8 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3975.5 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3891.0 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,3TBDMS,isomer #3 | CN1C=NC=C1CC(N[Si](C)(C)C(C)(C)C)C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4521.8 | Standard polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4322.0 | Semi standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4118.0 | Standard non polar | 33892256 |
| Pyroglutamyl-3-methylhistidyl-prolinamide,4TBDMS,isomer #1 | CN1C=NC=C1CC(C(=O)N1CCCC1C(=O)N(C(=O)C1CCC(=O)N1[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 4347.8 | Standard polar | 33892256 |