YTTERBIUM YB-169

US Previously Marketed

Details

Stereochemistry	ACHIRAL
Molecular Formula	Yb
Molecular Weight	168.93518712
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

[169Yb]

InChI

InChIKey=NAWDYIZEMPQZHO-AHCXROLUSA-N

InChI=1S/Yb/i1-4

HIDE SMILES / InChI

Molecular Formula	Yb
Molecular Weight	168.93518712
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Description
Sources: https://www.ncbi.nlm.nih.gov/pubmed/11786324 | https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.596813 | https://www.ncbi.nlm.nih.gov/pubmed/28940520 | https://www.tabletwise.com/us/ytterbium-yb-169-dtpa-injectable/uses-benefits-working

Yb-169 is a radioisotope of rare-earth element ytterbium. Yb-169 emits gamma-photons with an average energy of 93 keV and decays with a half‐life of 32 days. Yb-169 has an application to brachytherapy. Implants for direction modulated brachytherapy are developed for the treatment of locally advanced cervical cancer. Yb-169 was suggested for the use in intravascular brachytherapy for the treatment of arterial restenosis. An injected complex of Yb-169 with DPTA was used for the treatment of internal contamination with americium, curium, or plutonium and other conditions.

Approval Year

Conditions

Condition	Modality	Targets	Highest Phase	Product
Internal contamination with americium, curium, or plutonium 2 Sources: http://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&varApplNo=017518	Primary		Approved 8583	YTTERBIUM YB 169 DTPA Approved Use Internal contamination with americium, curium, or plutonium Launch Date 1976

Substance Class	Chemical Created by `admin` on `Mon Mar 31 19:51:31 GMT 2025` Edited by `admin` on `Mon Mar 31 19:51:31 GMT 2025`
Record UNII	T11645226K
Record Status	`Validated (UNII)`
Record Version

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Name

Type

Language

YTTERBIUM-169

Preferred Name

English

YTTERBIUM YB-169

Common Name

English

YTTERBIUM, ISOTOPE OF MASS 169

Common Name

English

YTTERBIUM-169 [MART.]

Common Name

English

YTTERBIUM,YB-169

Common Name

English

YTTERBIUM,YB-169 [VANDF]

Common Name

English

YB 169

Common Name

English

169YB

Common Name

English

Ytterbium (169 yb) [WHO-DD]

Common Name

English

169 YTTERBIUM

Common Name

English

Code System Code Type Description

CAS

14269-78-4