In shortGreen tea extract is a plant extract containing catechins (mainly EGCG). The extract’s CAS is 84650-60-2, while high-purity EGCG itself is 989-51-5. EGCG content (70%, 98%, etc.) determines the spec, use, and price.
What it is
An extract concentrating green-tea polyphenols (catechins), with EGCG (epigallocatechin gallate) as the main component. Used for antioxidant and functional positioning.
EGCG content & spec
EGCG content (e.g., 70%, 98%) indicates quality and price. High-content grades approach a single compound, sometimes labeled with the EGCG CAS (989-51-5). The caffeine spec is also important for use.
Sourcing points
Confirm EGCG content, caffeine level, residual pesticides, and heavy metals via the spec/COA. See FONTIA’s plant extracts.
FAQ
Difference between EGCG 70% and 98%?
The EGCG content. 98% is near a single compound; 70% is an extract grade. Choose by use and cost.
Does it contain caffeine?
It may. Decaffeinated grades exist, so confirm the caffeine spec.
Which CAS to use?
84650-60-2 for the extract; 989-51-5 for high-purity EGCG itself.