(R)-3-Butene-1,2-diol-1-(p-toluenesulfonate)
(R)-3-Butene-1,2-diol-1-(p-toluenesulfonate), CAS 138249-07-7, is a chiral building block with a molecular weight of 242.29 g/mol. This compound is valuable in asymmetric synthesis and general chemical synthesis due to its specific stereochemistry and reactive functional groups. It serves as a versatile intermediate for the construction of more complex organic molecules, particularly in the pharmaceutical and fine chemical industries.
- IUPAC
- (R)-2-Hydroxy-3-butenyl tosylate,(R)-3-Butene-1,2-diol 1-tosylate,(R)-1-Tosyloxy-3-buten-2-ol
- Synonyms
- (R)-2-Hydroxy-3-butenyl tosylate(R)-3-Butene-1,2-diol 1-tosylate(R)-1-Tosyloxy-3-buten-2-ol

Chiral Synthesis
Utilised as a stereodefined intermediate in the synthesis of enantiomerically pure compounds, contributing to the development of chiral drugs and fine chemicals.
Organic Intermediate
Serves as a versatile building block in multi-step organic synthesis, enabling the introduction of specific structural motifs into target molecules.
Asymmetric Synthesis
A key component in asymmetric reactions, allowing for the controlled formation of chiral centres and the production of stereoselective products.
| Molecular weight | 242.29 |
|---|---|
| Empirical formula | C11H14O4S |
| Assay | ≥99.0% (HPLC) |
| Optical activity | [α]20/D +7.7±0.5°, c = 1% in methanol |
| Storage temperature | 2-8°C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate) used for?
+
(R)-3-Butene-1,2-diol-1-(p-toluenesulfonate) is primarily used as a chiral building block in asymmetric synthesis and as a general organic intermediate for the construction of complex molecules.
What are the CAS number and formula for this compound?
+
The CAS number is 138249-07-7, and its empirical formula is C11H14O4S.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate) with an assay of ≥99.0% (HPLC). We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate) be handled?
+
This compound is a Warning substance, causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with a dust mask type N95, eyeshields, and gloves in a well-ventilated area. Avoid breathing dust/fume/gas/mist/vapours/spray.
Is this chemical shipped internationally?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and laboratory reagents, including (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate).
How can I request a sample or quote?
+
To request a sample or quote for (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate), please contact our sales team through the website or via email.
Does this product have specific storage requirements?
+
Yes, it is recommended to store (R)-3-Butene-1,2-diol-1-(p-toluenesulfonate) at 2-8°C.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis