(S)-(+)-5-(Hydroxymethyl)-2-pyrrolidinone p-toluenesulfonate - ≥95% , CAS No.51693-17-5

CAS: 51693-17-5 Cat. No.: I170736 Molecular Weight: 269.32 EC Number: 626-809-4
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
[(2S)-5-oxopyrrolidin-2-yl]methyl 4-methylbenzene-1-sulfonate | BCA69317 | (S)-toluene4-sulfonic acid 5-oxo-pyrrolidin-2-ylmethyl ester | 2-Pyrrolidinone, 5-[[[(4-methylphenyl)sulfonyl]oxy]methyl]-, (5S)- | toluene-4-sulfonic acid (S)-5-oxo-pyrrolidin-2-y
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
I170736-250mg
1

$12.90

$19.90
Save $7.00 (35.18%)
1g
I170736-1g
1

$31.90

$47.90
Save $16.00 (33.40%)
5g
I170736-5g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$109.90

$164.90
Save $55.00 (33.35%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
[(2S)-5-oxopyrrolidin-2-yl]methyl 4-methylbenzene-1-sulfonate | BCA69317 | (S)-toluene4-sulfonic acid 5-oxo-pyrrolidin-2-ylmethyl ester | 2-Pyrrolidinone, 5-[[[(4-methylphenyl)sulfonyl]oxy]methyl]-, (5S)- | toluene-4-sulfonic acid (S)-5-oxo-pyrrolidin-2-y
Specifications & Purity
≥95%
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Pubchem Sid504761059
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504761059
Canonical SmilesCC1=CC=C(C=C1)S(=O)(=O)OCC2CCC(=O)N2
IUPAC Name[(2S)-5-oxopyrrolidin-2-yl]methyl 4-methylbenzenesulfonate
InChIKeyAMZNHHZJURKRFX-JTQLQIEISA-N
INCHI1S/C12H15NO4S/c1-9-2-5-11(6-3-9)18(15,16)17-8-10-4-7-12(14)13-10/h2-3,5-6,10H,4,7-8H2,1H3,(H,13,14)/t10-/m0/s1
Isomeric SMILES CC1=CC=C(C=C1)S(=O)(=O)OC[C@@H]2CCC(=O)N2
WGK Germany 3
Molecular Weight 269.32
Reaxy-Rn 270386
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=270386&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassBenzenesulfonic acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentBenzenesulfonate esters
Alternative Parents p-Methylbenzenesulfonates  Tosyl compounds  Benzenesulfonyl compounds  Arylsulfonic acids and derivatives  Pyrrolidine-2-ones  Organosulfonic acid esters  Sulfonyls  Secondary carboxylic acid amides  Lactams  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Benzenesulfonate ester - P-methylbenzenesulfonate - Tosyl compound - Arylsulfonic acid or derivatives - Benzenesulfonyl group - Toluene - Pyrrolidone - 2-pyrrolidone - Organosulfonic acid ester - Pyrrolidine - Sulfonyl - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Carboxamide group - Lactam - Secondary carboxylic acid amide - Carboxylic acid derivative - Azacycle - Organoheterocyclic compound - Organic oxide - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organopnictogen compound - Organic oxygen compound - Hydrocarbon derivative - Organic nitrogen compound - Carbonyl group - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as benzenesulfonate esters. These are arenesulfonate esters that result from the formal condensation of the hydroxy group of an alcohol, enol, phenol or heteroarenol with benzenesulfonic acid.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot NumberCertificate TypeDateItem
C2019116Certificate of AnalysisOct 14, 2025 I170736
I2410489Certificate of AnalysisAug 29, 2024 I170736
I2410490Certificate of AnalysisAug 29, 2024 I170736
I2410492Certificate of AnalysisAug 29, 2024 I170736
Chemical and Physical Properties
Melt Point(°C)124-128 °C
Molecular Weight269.320 g/mol
XLogP31.000
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count4
Exact Mass269.072 Da
Monoisotopic Mass269.072 Da
Topological Polar Surface Area80.900 Ų
Heavy Atom Count18
Formal Charge0
Complexity393.000
Isotope Atom Count0
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.