# CBC

> CBC (cannabichromene) is a minor neutral cannabinoid formed when CBCA decarboxylates; it is usually present at well under 1% w/w in mature drug-type flower.

- Canonical: https://genetixbay.com/knowledge/glossary/cbc.html
- Also written: cannabichromene, neutral CBC
- Glossary category: Cannabinoids and terpenes · Evidence: Established
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

CBC, cannabichromene, is the neutral form of [CBCA](https://genetixbay.com/knowledge/glossary/cbca.md), one of the three main products the plant can make from [CBGA](https://genetixbay.com/knowledge/glossary/cbga.md). It is a minor [cannabinoid](https://genetixbay.com/knowledge/glossary/cannabinoid.md) in nearly all modern drug-type and hemp-type material, though some reports find relatively higher CBCA in young plants and in certain lines. Light exposure can slowly convert CBC into [CBL](https://genetixbay.com/knowledge/glossary/cbl.md) during storage.

## In practice

Many potency panels report CBC or CBCA alongside the main cannabinoids. A reading of 0.1-0.5% w/w is typical for flower. It counts toward [total cannabinoids](https://genetixbay.com/knowledge/glossary/total-cannabinoids.md) but rarely changes a plant's classification. GenetixBay makes no claims about CBC's effects; human evidence is thin.

## Don't confuse with

- **CBCA**: the acid form the plant makes.
- **CBN**: a [THC](https://genetixbay.com/knowledge/glossary/thc.md) oxidation product with a similar abbreviation.
- **CBL**: a light-induced breakdown product of CBC.

## Related terms

[CBCA](https://genetixbay.com/knowledge/glossary/cbca.md), [CBGA](https://genetixbay.com/knowledge/glossary/cbga.md), [CBL](https://genetixbay.com/knowledge/glossary/cbl.md), [Cannabinoid](https://genetixbay.com/knowledge/glossary/cannabinoid.md), [Decarboxylation](https://genetixbay.com/knowledge/glossary/decarboxylation.md)

## Sources

1. Hanuš LO, Meyer SM, Muñoz E, Taglialatela-Scafati O, Appendino G. 2016. Phytocannabinoids: a unified critical inventory. Natural Product Reports 33(12):1357-1392.
2. ElSohly MA, Slade D. 2005. Chemical constituents of marijuana: the complex mixture of natural cannabinoids. Life Sciences 78(5):539-548.