MRM scan using QTRAP400

Hi experts, Can we use MRM transition using higher m/z value using QTRAP4000 (for example 1300.3>350.2)? Just curious. QTRAP4000 can scan maximum 1200 m/z then how can it scan for >1200 m/z...

06 July 2017 1,695 7 View

Quantitation using mass spectrometry?

Hello, I have a simple question on quantitation using mass spectrometry with an example. Here is an example: Experimental: 50mg sample was used to extract metabolites, the sample was extracted,...

31 December 2016 6,143 8 View

Mass spectrometry of sphingolipid?

07 August 2016 2,829 3 View

Selecting LC detector for lipid analysis?

Hey Experts, I am planning to buy LC detector for lipid analysis. Can you please suggest me which LC detector would be best for lipid analysis? I am using SCIEX 5500 QTRAP and Shimadzu LC. Thank...

07 August 2016 8,131 7 View

Amount of organic solvent to add to dissolve total dry lipid?

Hello all,I just finished lipid extraction using Bligh Dyer method. I used 100ul of plasma samples for extraction. I got about 0.9-2.2 mg dry weight total lipid. I want to know how much organic...

06 July 2016 5,305 3 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...

02 March 2021 8,437 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View