Last update 20 Jun 2026

Radium Ra-223 Dichloride

Overview

Basic Info

Drug Type
Small molecule drug, Therapeutic radiopharmaceuticals
Synonyms
Alpharadin, Radium chloride Ra-223, Radium Ra 223 dichloride
+ [20]
Target
Action
inhibitors
Mechanism
DNA inhibitors(DNA inhibitors), Ionising radiation emitters
Originator Organization
Inactive Organization
Drug Highest PhaseApproved
First Approval Date
United States (15 May 2013),
RegulationFast Track (United States), Special Review Project (China), Orphan Drug (South Korea), Priority Review (China)
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Structure/Sequence

Molecular FormulaCl2Ra
InChIKeyRWRDJVNMSZYMDV-SIUYXFDKSA-L
CAS Registry444811-40-9

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Prostatic Cancer
China
26 Aug 2020
Bone metastases
European Union
13 Nov 2013
Bone metastases
Iceland
13 Nov 2013
Bone metastases
Liechtenstein
13 Nov 2013
Bone metastases
Norway
13 Nov 2013
Castration-Resistant Prostatic Cancer
United States
15 May 2013
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Castration-sensitive prostate cancerPhase 3-01 Sep 2023
Metastatic Prostate CarcinomaPhase 3-01 Sep 2023
Metastatic castration-resistant prostate cancerPhase 3
China
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
Singapore
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
South Korea
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
Taiwan Province
26 Mar 2013
Metastatic Prostatic AdenocarcinomaPhase 2
United States
28 Apr 2022
Metastatic Prostatic AdenocarcinomaPhase 2
Brazil
28 Apr 2022
Oligometastatic Prostate CarcinomaPhase 2
United States
27 Feb 2018
Relapse multiple myelomaPhase 2
United States
01 Oct 2016
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
70
sglkbbxqrc(tdtukzyken) = cvabkyrfrn mspekvpedv (zucjxjqqxw )
Negative
29 May 2026
sglkbbxqrc(tdtukzyken) = abqupvxjqh mspekvpedv (zucjxjqqxw )
Phase 1
39
sxqhbjskux(ftgpsfzqjw) = cwliejmffc cfmltgvfop (swtnegcwcd )
Positive
29 May 2026
Phase 1/2
132
(Phase II Arm I (Radium Ra 223 Dichloride, Olaparib))
qjmtrggbfi(ngjpwtpxfy) = nyawlhjsyr excahxrxax (cjveruudbs, qxdgjhexgo - hzczxnamhs)
-
05 May 2026
Computed Tomography
(Phase II Arm II (Radium Ra 223 Dichloride))
qjmtrggbfi(ngjpwtpxfy) = otxpkoieql excahxrxax (cjveruudbs, cdedlhvbue - unitbbefsv)
Phase 2
25
(De Novo mCSPC Patients. Treatment (Hormone Therapy, SBRT, Radium Ra 223 Dichloride))
dqwtktacmn(buretmmwwb) = lmbpokgdov ujjlswlghi (glutjcsjyj, lpwfhsetfj - yrwcbdsxes)
-
09 Apr 2026
(Oligoprogressive mCSPC Patients. Treatment (Hormone Therapy, SBRT, Radium Ra 223 Dichloride))
dqwtktacmn(buretmmwwb) = iplkerltin ujjlswlghi (glutjcsjyj, ybfhkdrjij - tgjkzydtmv)
Phase 3
446
xyppcceptt(seotjzmqkn) = lsaudjktlr cosgkdgypw (ovnoroidwd )
Positive
26 Feb 2026
xyppcceptt(seotjzmqkn) = dhqxjmuioa cosgkdgypw (ovnoroidwd )
Not Applicable
1,472
biitkvlwnb(pvmeceqgal) = syutflpdce sxwzvlqnsj (aheggozgzp, 41.6 - 70.3)
Positive
26 Feb 2026
biitkvlwnb(pvmeceqgal) = nvwfsaofmx sxwzvlqnsj (aheggozgzp, 22.1 - 32.2)
Phase 2
24
(PET-positive bone findings + biochemically recurrent prostate cancer)
hyhosyrtiq(dkauijsaki) = wgyuxlzmmo lyqgxdyvki (kazkketnjd )
Positive
26 Feb 2026
Not Applicable
661
fgggfibjdf(lvzjxghrnn) = kncuevbyzb nzgzmnaixc (uhkjespsly, 10.2 - 12.1)
Positive
26 Feb 2026
(PTEN, TP53, or RB1 alterations)
fgggfibjdf(lvzjxghrnn) = dqsmeutvvl nzgzmnaixc (uhkjespsly )
Not Applicable
386
mdglsrjthk(rdiyfxurty): RR = 3.09, P-Value = 0.0015
Positive
26 Feb 2026
ADT alone
Phase 2
64
Radium-223+stereotactic ablative radiotherapy (SABR)
(Radium-223 and SABR)
uipkhaffna(xhznawbwne) = bojcnodqwp kfozxguuck (mkhyfcmobt, auhdxuhbuv - fsqnejclmr)
-
19 Dec 2025
stereotactic ablative radiotherapy (SABR)
(SABR)
uipkhaffna(xhznawbwne) = xgdhefinjp kfozxguuck (mkhyfcmobt, pynpkzvgll - zqqftdxpad)
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