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

Details

Stereochemistry ACHIRAL
Molecular Formula Tl
Molecular Weight 200.97080377
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of THALLIUM TL-201

SMILES

[201Tl]

InChI

InChIKey=YWUHBIFVNJARPY-LFRAOTKDSA-N
InChI=1S/Tl.H/i1-3;

HIDE SMILES / InChI

Molecular Formula Tl
Molecular Weight 200.97080377
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Thallium TL-201 is a radioactive isotope of thallium with a half-life of 73 hours. As a chloride salt, it is used in myocardial perfusion imaging for diagnosis and localization of myocardial infarction. In conjunction with exercise stress testing, thallium TL-201 injection is used in the diagnosis of ischemic heart disease. However, technetium-99m sestamibi and Tc-99m tetrafosmin have supplanted thallium-201 chloride as the most commonly used single-photon myocardial imaging agents, because of their superior image quality and the lower effective radiation dose to the patient.

Approval Year

Substance Class Chemical
Created
by admin
on Mon Mar 31 20:20:04 GMT 2025
Edited
by admin
on Mon Mar 31 20:20:04 GMT 2025
Record UNII
H91Z8HBK1B
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
201TL
Preferred Name English
THALLIUM TL-201
Common Name English
THALLIUM-201
Common Name English
THALLIUM, ISOTOPE OF MASS 201
Common Name English
TL 201
Common Name English
Thallium (201 tl) [WHO-DD]
Common Name English
TL201 ELEMENT
Common Name English
Classification Tree Code System Code
WHO-ATC V09GX01
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
Code System Code Type Description
EVMPD
SUB15506MIG
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
CHEBI
37804
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
SMS_ID
100000091824
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
EPA CompTox
DTXSID801018220
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
CAS
15064-65-0
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
PUBCHEM
5461982
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
DRUG BANK
DB15361
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
FDA UNII
H91Z8HBK1B
Created by admin on Mon Mar 31 20:20:04 GMT 2025 , Edited by admin on Mon Mar 31 20:20:04 GMT 2025
PRIMARY
Related Record Type Details
ACTIVE MOIETY