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  • All Diazepam chemicals
  • How to combine the Diazepam chemicals
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  1. Games
  2. Horror Games
  3. Directive 8020

Directive 8020 Diazepam chemicals walkthrough

Guides
By Danielle Rose published 12 May 2026

When Anders tasks you with synthesizing Diazepam in Directive 8020, you must decipher some chemical compositions

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The Diazepam chemical sequence shown on a screen in Directive 8020.
(Image credit: Supermassive Games)
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During this puzzle, Anders asks Cooper to make some Diazepam in Directive 8020. While you don't now why yet, she's definitely going to drug someone - after all, suspicions are high throughout the crew at this point. While the game directs you to the chemical formula to make the drug, it doesn't tell you what they are.

It's up to you to know (or find out) which are the three chemical names relating to the formulas, as you'll need to pick them out of the storage container holding nine different chemicals. When you know, you'll need to enter a three-digit code by interacting with the cabinet. These three digits are the three numbers associated to the three chemicals, entered in the sequence shown on the Directive 8020 Diazepam synthesis poster. If you're still a little lost, follow my walkthrough below.

All Directive 8020 Diazepam chemicals

The three chemical compounds used for making Diazepam in Directive 8020.

(Image credit: Supermassive Games)

At the first screen you're directed towards, you'll be shown the three chemical compound formulae that make up Diazepam. Luckily, if you aren't a chemistry whiz, the names of these compounds can be found around the room.

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The chemical names are found on three separate posters. To make things easier, though, I've listed them below, and you can see them in the image above.

  • Chloroacetyl Chloride
  • Ammonia
  • Dimethyl Sulphate

Because I'm nice, this list also shows the three chemicals in the correct order, so how do you combine them?

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How to combine the Diazepam chemicals

Cooper stands in front of the storage unit holding the Diazepam chemicals in Directive 8020.

(Image credit: Supermassive Games)

Back at the storage cabinet, you'll be given a prompt to combine the chemicals, which actually opens a Directive 8020 key code screen. This number is only three-digits long, relating to the numbers of the three chemicals listed above.

In the cabinet, these chemicals are associated with the following numbers:

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  • Chloroacetyl Chloride: 1
  • Ammonia: 6
  • Dimethyl Sulphate: 8

  • Diazepam key code: 168

Now simply enter these numbers, in this order, into the key code screen. The Diazepam will be automatically produced, and you'll be able to return to Anders to see what she's up to.

Though you're already playing the game, why not check out our Directive 8020 review to see what Jasmine thought of the horror game? And take a look at how many Directive 8020 Episodes you've got left.

© GamesRadar+. Not to be reproduced without permission.

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PC Gaming Xbox Series X PS5 Platforms Xbox PlayStation
Danielle Rose
Danielle Rose
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Guides Writer

After studying Music and Lifestyle journalism and writing a column for a stylish lifestyle magazine in her hometown of Brighton, Danielle finally found her feet writing about videogames for WePC in 2021. She then honed her guides writing skills at PCGamesN between 2022 and 2026, when she took those skills to GamesRadar as a Guides Writer. Danielle's guides are a safe space - she definitely got stuck before you did, which is why she's perfect for the job. When she's not replaying the Silent Hill games or a more up-to-date single-player horror game, you'll find her fighting for her life in Dead by Daylight, tending to a garden in Stardew Valley, or doing both in Minecraft.

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