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147923

Sigma-Aldrich

Camphor-10-sulfonic acid (β)

98%

Synonym(s):
CSA
Empirical Formula (Hill Notation):
C10H16O4S
CAS Number:
Molecular Weight:
232.30
Beilstein:
3205973
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

98%

form

solid

mp

203-206 °C (dec.) (lit.)

SMILES string

[H][C@@]12CC[C@@](CS(O)(=O)=O)(C(=O)C1)C2(C)C

InChI

1S/C10H16O4S/c1-9(2)7-3-4-10(9,8(11)5-7)6-15(12,13)14/h7H,3-6H2,1-2H3,(H,12,13,14)/t7-,10-/m1/s1

InChI key

MIOPJNTWMNEORI-GMSGAONNSA-N

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Methyl benzylidene camphor United States Pharmacopeia (USP) Reference Standard

USP

1424222

Methyl benzylidene camphor

Methyl Benzylidene Camphor Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR2805

Methyl Benzylidene Camphor

assay

98%

assay

≥98.0% (T)

assay

-

assay

-

form

solid

form

-

form

-

form

solid

mp

203-206 °C (dec.) (lit.)

mp

-

mp

-

mp

-

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

-

General description

Camphorsulfonic acid is a organosulphur compound.

Application

Camphor-10-sulfonic acid (β) (CSA) is extensively used as an acid catalyst.
  • It can be used in a catalytic amount to protect hydroxyl groups as tetrahydropyranyl (THP) ethers using dihydropyran.
  • It also catalyzes the protection of ketones as ketals.
  • It is a useful catalyst for the intramolecular ring opening of epoxides.
  • CSA can also be used to catalyze nucleophile-promoted alkyne-iminium cyclization in the total synthesis of pumiliotoxin A.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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