Ascorbyl Stearate is a fat-soluble ester of vitamin C, L-ascorbic acid 6-stearate (CAS 25395-66-8, C24H42O7, MW 442.59), formed synthetically by esterifying ascorbic acid with stearic acid (food additive E305). Like ascorbyl palmitate it is lipophilic and oil-dispersible rather than water-soluble, the defining physical distinction from the free acid and the mineral ascorbate salts of this family. Its acyl group is the eighteen-carbon stearate rather than palmitate's sixteen-carbon chain, giving it a slightly higher molecular weight and a correspondingly lower ascorbic acid fraction per gram than ascorbyl palmitate. It is an off-white powder that we manufacture into softgel, capsule and powder formats.
- Softgels
- Capsules
- Powders
Applications
Oil-based and fat-soluble vitamin C supplements, softgels and multivitamins.
Documentation & quality
Every order is backed by the documents your quality team files, and the controls behind them.
Certificate of Analysis
every batchSpecification sheet
on requestAllergen statement
on requestGMO statement
on requestTraceability
on requestSafety Data Sheet
where applicableHow it’s controlled
- Identity verified on every incoming raw material
- Screened for heavy metals and microbial contaminants
- Full batch and lot traceability
- Produced under our certified NSF GMP system
Other forms of Vitamin C
Ascorbic Acid
L-ascorbic acid
- CAS
- 50-81-7
- Formula
- C6H8O6
- Vegan
- Gluten-free
Acerola Extract (Natural Vitamin C)
L-ascorbic acid (from Malpighia emarginata fruit)
- CAS
- 50-81-7
- Formula
- C6H8O6
- Vegan
- Gluten-free
- Non-GMO
Sodium Ascorbate
Sodium L-ascorbate
- CAS
- 134-03-2
- Formula
- C6H7NaO6
- Vegan
- Gluten-free
Calcium Ascorbate
Calcium L-ascorbate dihydrate
- CAS
- 5743-28-2
- Formula
- C12H18CaO14
- Vegan
- Gluten-free
Magnesium Ascorbate
Magnesium L-ascorbate
- CAS
- 15431-40-0
- Formula
- C12H14MgO12
- Vegan
- Gluten-free
Potassium Ascorbate
Potassium L-ascorbate
- CAS
- 15421-15-5
- Formula
- C6H7KO6
- Vegan
- Gluten-free
Ascorbyl Palmitate
L-ascorbic acid 6-palmitate
- CAS
- 137-66-6
- Formula
- C22H38O7
- Vegan
- Gluten-free
Ester-C
Calcium L-ascorbate with vitamin C metabolites (calcium threonate)
- CAS
- 5743-28-2
- Formula
- C12H18CaO14
- Vegan
- Gluten-free
Liposomal Vitamin C
L-ascorbic acid encapsulated in phospholipid liposomes
- CAS
- 50-81-7
- Formula
- C6H8O6
- Vegan
- Gluten-free
Zinc Ascorbate
Zinc bis(L-ascorbate)
- CAS
- 331242-75-2
- Formula
- C12H14O12Zn
- Vegan
- Gluten-free