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Aromatic building blocks

Benzoin, (-)-

Also known as (R)-benzoin, (R)-(-)-benzoin, (-)-Benzoin

CAS 5928-66-5Formula C14H12O2Molar mass 212.25 g/mol
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Benzoin, (-)- chemical structure, C14H12O2, CAS 5928-66-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5928-66-5
Formula
C14H12O2
Molar mass
212.25 g/mol
HS code
291440
Category
Aromatic building blocks

What is Benzoin, (-)-?

Plain description, key identifiers and synonyms

(R)-benzoin is a benzoin. It is an enantiomer of a (S)-benzoin.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-2-hydroxy-1,2-diphenylethanone
CAS number
5928-66-5 CAS number cross-checked
Molecular formula
C14H12O2
UNII
BKM6YU2C5Y
MDL number
MFCD00082818
InChIKey
ISAOCJYIOMOJEB-CYBMUJFWSA-N
InChI
InChI=1S/C14H12O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10,13,15H/t13-/m1/s1
Canonical SMILES
O=C(c1ccccc1)C(O)c1ccccc1
Isomeric SMILES
C1=CC=C(C=C1)[C@H](C(=O)C2=CC=CC=C2)O

Synonyms

  • (R)-benzoin
  • (R)-(-)-benzoin
  • (-)-Benzoin
  • (2R)-2-hydroxy-1,2-diphenylethanone
  • (-)-2-Hydroxy-2-phenylacetophenone
  • (-)-2-Hydroxy-1,2-diphenylethanone
  • Ethanone, 2-hydroxy-1,2-diphenyl-, (R)-
  • Ethanone, 2-hydroxy-1,2-diphenyl-, (2R)-
  • (R)-()-Benzoin
  • (R)-2-Hydroxy-1,2-diphenylethanone
  • (R)-(?)-Benzoin
  • (2R)-2-hydroxy-1,2-diphenylethan-1-one
  • (R)-(-)-Benzoin, 98%
  • (2R)-2-hydroxy-1,2-diphenyl-ethanone
  • (R)-2-Hydroxy-1,2-diphenylethan-1-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
212.25 g/molcalc.
Exact mass
212.0837 Dacalc.
LogP (octanol/water)
2.6calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
3calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.07calc.
Formal charge
0calc.
Stereocentres
1calc.
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=C(Cc1ccccc1)c1ccccc1

O=C(Cc1ccccc1)c1ccccc1

2 rings, 15 atoms, the 2-Phenylacetophenone ring system.

1,155 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Benzoin, (-)- suppliers

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Benzoin, (-)- price

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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 Benzoin, (-)- is traded under.

HS 2914.40Indicative HS code

Ketone-alcohols and ketone-aldehydes

World exports in 2024
$199M
+2.5% vs 2023, imports $247M
2019 to 2024
Top exporters
  1. China29.5%
  2. Germany14.4%
  3. Netherlands12.7%
Top importers
  1. United States37.2%
  2. Netherlands8.5%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Benzoin, (-)-, based on the data on this page

What is Benzoin, (-)-?

(R)-benzoin is a benzoin. It is an enantiomer of a (S)-benzoin.

Guides for buyers

Practical guides that help when you source, ship or handle Benzoin, (-)-

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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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