Skip to content
SupplyList
Menu

Ascorbyl glucoside

Ascorbyl glucoside suppliers and sourcing guide

Ascorbyl glucoside is ascorbic acid with a glucose unit bound at the 2-position, which makes it far more stable in water than ascorbic acid. It is made enzymatically: ascorbic acid is reacted with starch or dextrin using a glycosyltransferase, the extra glucose units are trimmed with glucoamylase, and the product is purified and crystallized. It is sold as a white, water-soluble powder that gives an acidic solution and is usually neutralized in the formula.

See suppliersWhat to ask for on the COA
Also known as
ascorbic acid 2-glucoside · 2-O-alpha-D-glucopyranosyl-L-ascorbic acid · AA2G · CAS 129499-78-1
Facts checked
November 2026

Forms and grades of ascorbyl glucoside

Suppliers sell different products under the same name. Specify the one you need.

  • Crystalline powder

    Purified ascorbyl glucoside of 98% or higher, the standard form for skin care.

  • Pre-neutralized grades

    Powder or solution supplied with a base so it can be added without separate pH adjustment.

  • Blends

    Ascorbyl glucoside combined with other vitamin C derivatives or humectants in supplier blends, sold under trade names; ask for the full composition.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Assay (HPLC)
Ascorbyl glucoside content by HPLC on a dried basis.
Free ascorbic acid
Residual ascorbic acid by HPLC, which affects color stability in the finished product.
Loss on drying
Moisture content of the powder.
Solution pH and color
pH and color of a test solution; color increase signals degradation.
Heavy metals
Lead, arsenic and other metals by ICP-MS.

Storage, lots and expiry

Storage and shelf life

Store ascorbyl glucoside sealed in a cool, dry place away from light; it is more stable than ascorbic acid but still absorbs moisture once opened. Shelf life is set by the supplier specification, and older lots should be checked for assay and color.

Lots and expiry dates

Record the assay and free ascorbic acid from each COA, since both affect use level and color in the finished product. Rotate oldest first.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Ascorbyl glucoside suppliers

Manufacturers and distributors whose own websites say they sell it.

We are checking ascorbyl glucoside suppliers now

Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.

Sell ascorbyl glucoside? Request a listing

Frequently asked questions

What forms of ascorbyl glucoside can brands buy?

Common forms include crystalline powder, pre-neutralized grades and blends. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for ascorbyl glucoside include?

Expect assay (HPLC), free ascorbic acid, loss on drying, solution pH and color and heavy metals, each with its method, specification and result for that lot.

How should ascorbyl glucoside be stored?

Store ascorbyl glucoside sealed in a cool, dry place away from light; it is more stable than ascorbic acid but still absorbs moisture once opened. Shelf life is set by the supplier specification, and older lots should be checked for assay and color.

What is the regulatory status of ascorbyl glucoside?

Health Canada's Natural Health Products Ingredients Database lists ascorbic acid 2-O-glucoside (common name ascorbyl glucoside, CAS 129499-78-1) as an approved ingredient for topical use only, up to 5%, citing CIR. The same entry lists skin-conditioning agent among its non-medicinal purposes.

More cosmetic actives

All 62 cosmetic actives

Sell ingredients to brands?

Request a free listing for the ingredients you make or distribute. No paid placement.

Request a listing