# q4md-CD force field

**URL:** <https://gromacs.bioexcel.eu/t/q4md-cd-force-field/2997>\
**Category:** User discussions\
**Created:** [October 21, 2021, 12:00am UTC](https://gromacs.bioexcel.eu/t/q4md-cd-force-field/2997 "2021-10-21T00:00:59Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![mijiddorj](https://avatars.discourse-cdn.com/v4/letter/m/779978/32.png) [@mijiddorj](https://gromacs.bioexcel.eu/u/mijiddorj)\
**Post date:** [October 21, 2021, 12:00am UTC](https://gromacs.bioexcel.eu/t/q4md-cd-force-field/2997/1 "2021-10-21T00:00:59Z")

</div>

Hello, I found some references that use Gromacs and q4md-CD force field for cyclodextrin molecules in MD simulations. However, I could not find the force field from Gromacs site [Force fields - Gromacs](http://www.gromacs.org/Downloads/User_contributions/Force_fields). If you have any experience, please tell me the way to get the force field for Gromacs calculations.

Best regards,

Mijiddorj

---

<div class="post-metadata">

**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [October 21, 2021, 1:54am UTC](https://gromacs.bioexcel.eu/t/q4md-cd-force-field/2997/2 "2021-10-21T01:54:13Z")

</div>

Your best bet is to inquire with the authors of the papers you have read.

---

<div class="post-metadata">

**Author:** ![mijiddorj](https://avatars.discourse-cdn.com/v4/letter/m/779978/32.png) [@mijiddorj](https://gromacs.bioexcel.eu/u/mijiddorj)\
**Post date:** [October 21, 2021, 2:21am UTC](https://gromacs.bioexcel.eu/t/q4md-cd-force-field/2997/3 "2021-10-21T02:21:11Z")

</div>

Dear Justin,  
Thank you very much for your kind reply.

Mijiddorj