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Heterocyclic building blocks

L-Isoascorbic acid

Also known as (5S)-5-((1S)-1,2-dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one, L-erythro-hex-2-enono-1,4-lactone, L-Erythroascorbic acid, L-araboascorbic acid

CAS 26094-91-7Formula C6H8O6Molar mass 176.12 g/molEC 873-440-1
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant
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L-Isoascorbic acid chemical structure, C6H8O6, CAS 26094-91-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
26094-91-7
Formula
C6H8O6
Molar mass
176.12 g/mol
EC number
873-440-1
HS code
293220
Category
Heterocyclic building blocks

What is L-Isoascorbic acid?

Plain description, key identifiers and synonyms

L-isoascorbic acid is an ascorbic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one
CAS number
26094-91-7
EC number
873-440-1
Molecular formula
C6H8O6
InChIKey
CIWBSHSKHKDKBQ-VHUNDSFISA-N
InChI
InChI=1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5-/m0/s1
Canonical SMILES
O=C1OC(C(O)CO)C(O)=C1O
Isomeric SMILES
C([C@@H]([C@H]1C(=C(C(=O)O1)O)O)O)O

Synonyms

  • (5S)-5-((1S)-1,2-dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one, L-erythro-hex-2-enono-1,4-lactone
  • L-Erythroascorbic acid
  • L-araboascorbic acid
  • L-Isoascorbinsaeure
  • (5S)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2,5-dihydrofuran-2-one
  • L-erythro-hex-2-enono-1,4-lactone
  • (5S)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxyfuran-2(5H)-one
  • (2S)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one
  • (S)-5-((S)-1,2-Dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
176.12 g/molcalc.
Exact mass
176.0321 Dacalc.
LogP (octanol/water)
-1.41calc.
Topological polar surface area
107.2 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
2calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1C=CCO1

O=C1C=CCO1

1 ring, 6 atoms, the 2(5H)-Furanone ring system.

877 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

L-Isoascorbic acid suppliers

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L-Isoascorbic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code L-Isoascorbic acid is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for L-Isoascorbic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about L-Isoascorbic acid, based on the data on this page

What is L-Isoascorbic acid?

L-isoascorbic acid is an ascorbic acid.

What is the CAS number of L-Isoascorbic acid?

The CAS registry number of L-Isoascorbic acid is 26094-91-7.

What is the molecular formula and weight of L-Isoascorbic acid?

The molecular formula of L-Isoascorbic acid is C6H8O6 and its molar mass is 176.12 g/mol.

What is L-Isoascorbic acid used for?

Known uses and roles of L-Isoascorbic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is L-Isoascorbic acid hazardous?

L-Isoascorbic acid carries the GHS signal word "Danger". Main hazards: causes skin irritation, causes serious eye damage, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of L-Isoascorbic acid?

L-Isoascorbic acid is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy L-Isoascorbic acid?

Post a free request on CompoundList and suppliers of L-Isoascorbic acid will send you quotes. Your contact details stay private until you accept a quote.

What is the price of L-Isoascorbic acid?

Suppliers quote L-Isoascorbic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle L-Isoascorbic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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