U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry RACEMIC
Molecular Formula C4H8N2O.ClH
Molecular Weight 136.58
Optical Activity ( + / - )
Defined Stereocenters 0 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of 5-methylpyrazolidin-3-one hydrochloride

SMILES

Cl.CC1CC(=O)NN1

InChI

InChIKey=PBQPYEWCNDAHIM-UHFFFAOYSA-N
InChI=1S/C4H8N2O.ClH/c1-3-2-4(7)6-5-3;/h3,5H,2H2,1H3,(H,6,7);1H

HIDE SMILES / InChI
Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE
Molecular Formula C4H8N2O
Molecular Weight 100.1191
Charge 0
Count
Stereochemistry RACEMIC
Additional Stereochemistry No
Defined Stereocenters 0 / 1
E/Z Centers 0
Optical Activity ( + / - )

Approval Year

Unknown
149124
Substance Class Chemical
Created
by admin
on Wed Apr 02 15:02:06 GMT 2025
Edited
by admin
on Wed Apr 02 15:02:06 GMT 2025
Record UNII
GZV3QWF9L8
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
5-methylpyrazolidin-3-one hydrochloride
Systematic Name English
NSC-525497
Preferred Name English
3-Pyrazolidinone, 5-methyl-, hydrochloride
Systematic Name English
3-Pyrazolidinone, 5-methyl-, hydrochloride (1:1)
Systematic Name English
5-Methyl-3-pyrazolidinone hydrochloride
Systematic Name English
3-Pyrazolidinone, 5-methyl-, monohydrochloride
Systematic Name English
Code System Code Type Description
EPA CompTox
DTXSID20585869
Created by admin on Wed Apr 02 15:02:06 GMT 2025 , Edited by admin on Wed Apr 02 15:02:06 GMT 2025
PRIMARY
PUBCHEM
16370087
Created by admin on Wed Apr 02 15:02:06 GMT 2025 , Edited by admin on Wed Apr 02 15:02:06 GMT 2025
PRIMARY
FDA UNII
GZV3QWF9L8
Created by admin on Wed Apr 02 15:02:06 GMT 2025 , Edited by admin on Wed Apr 02 15:02:06 GMT 2025
PRIMARY
NSC
525497
Created by admin on Wed Apr 02 15:02:06 GMT 2025 , Edited by admin on Wed Apr 02 15:02:06 GMT 2025
PRIMARY
CAS
10234-77-2
Created by admin on Wed Apr 02 15:02:06 GMT 2025 , Edited by admin on Wed Apr 02 15:02:06 GMT 2025
PRIMARY
Related Record Type Details
Structure of 5-methylpyrazolidin-3-one
PARENT -> SALT/SOLVATE
NIH
NCATS
PRIVACY NOTICE
ACCESSIBILITY
DISCLAIMER
HHS VULNERABILITY DISCLOSURE
For language access assistance, contact the NCATS Public Information Officer
National Center for Advancing Translational Sciences (NCATS),
6701 Democracy Boulevard, Bethesda MD 20892-4874 • 301-594-8966