653.13g/mol
https://pubchem.ncbi.nlm.nih.gov/compound/133082067

Coco-caprylate/caprate is used as an emollient in cosmetics which softens the skin and leaves it dry. It acts as a lightweight emollient. It has excellent spreadability and is a substitute for silicone oil.
Skin care: It is highly biocompatible with the skin. Thus it penetrates deep into the skin and helps it repair itself. It has a low greasiness. It is used in foundation, sunscreens, facial moisturizers, serums, etc.
Hair care: It provides excellent moisturization and shine to hair and provides a soft and silky after feel. It is used in hair colors, bleaches, detanglers, etc.

It is obtained by mixing the esters from coconut-derived fatty alcohols with caprylic and capric acids, also derived from coconut.
https://cosmetics.specialchem.com/inci-ingredients/coco-caprylate-caprate