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Camizestrant, AZD 9833

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Camizestrant, AZD 9833

AZ 14066724

FDA 2026, APPROVALS 2026, Etcamah

To treat hormone receptor-positive, human epidermal growth factor receptor 2-negative, locally advanced or metastatic breast cancer upon detection of ESR1 mutation during aromatase inhibitor and CDK4/6 inhibitor therapy

CAS: 2222844-89-3
Chemical Formula: C24H28F4N6
Exact Mass: 476.2312
Molecular Weight: 476.5236
Elemental Analysis: C, 60.49; H, 5.92; F, 15.95; N, 17.64

N-(1-(3-fluoropropyl)azetidin-3-yl)-6-((6S,8R)-8-methyl-7-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-3H-pyrazolo[4,3-f]isoquinolin-6-yl)pyridin-3-amine

 N-(1-(3-fluoropropyl)azetidin-3-yl)-6-((6S,8R)-8-methyl-7-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-3H-pyrazolo[4,3-f]isoquinolin-6-yl)pyridin-3-amine

  • AZ14066724
  • AZD-9833
  • AZD9833
  • Camizestrant
  • UNII-JUP57A8EPZ
  • WHO 11592
  • OriginatorAstraZeneca
  • ClassAmines; Antineoplastics; Azetidines; Fluorinated hydrocarbons; Isoquinolines; Pyrazolones; Pyridines; Small molecules
  • Mechanism of ActionSelective estrogen receptor degraders
  • Phase IIIBreast cancer, APPROVED FDA 2026
  • 13 Jun 2022AstraZeneca initiates a phase I drug-drug interaction trial of AZD 9833 Healthy postmenopausal female volunteers, in USA (NCT05438303)
  • 10 Jun 2022AstraZeneca and Quotient Sciences complete the phase I QSC205863 trial in Breast cancer (In volunteers) in United Kingdom (PO, Liquid) (NCT05364255)
  • 03 Jun 2022Safety, efficacy and pharmacokinetics data from the phase I SERENA 1 trial for Breast cancer presented at the 58th Annual Meeting of the American Society of Clinical Oncology (ASCO-2022)
  • Mechanism:selective estrogen receptor degrader
  • Area under investigation:estrogen receptor +ve breast cancer
  • Date commenced phase:Q1 2019
  • Estimated Filing Acceptance:
  • CountryDateUS: EU: Japan: China:

AZD9833 is an orally available selective estrogen receptor degrader (SERD), with potential antineoplastic activity. Upon administration, SERD AZD9833 binds to the estrogen receptor (ER) and induces a conformational change that results in the degradation of the receptor. This prevents ER-mediated signaling and inhibits the growth and survival of ER-expressing cancer cells

Camizestrant is an orally available selective estrogen receptor degrader (SERD), with potential antineoplastic activity. Upon administration, camizestrant binds to the estrogen receptor (ER) and induces a conformational change that results in the degradation of the receptor. This prevents ER-mediated signaling and inhibits the growth and survival of ER-expressing cancer cells

Camizestrant, sold under the brand name Etcamah, is an anti-cancer medication used for the treatment of breast cancer.[2] It is an estrogen receptor alpha antagonist and a selective estrogen receptor degrader (SERD).[4]

Camizestrant is an oral selective estrogen receptor degrader (ngSERD) and complete estrogen receptor (ER) antagonist.[2] It blocks the activity of estrogen receptor alpha encoded by both wild-type and mutated ESR1 and induces proteasome-dependent degradation of estrogen receptor alpha, without agonizing estrogen receptor alpha.[2]

Camizestrant was authorized for medical use in the European Union in July 2026,[2] and in the United States in September 2026.[1][5]

SYN

https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0040-1719368

Discovery of AZD9833, a Potent and Orally Bioavailable Selective Estrogen Receptor Degrader and Antagonist J. Med. Chem. 2020, 63, 14530–14559, DOI: 10.1021/acs.jmedchem.0c01163.

SYN

doi: 10.1021/acs.jmedchem.0c01163.

aReagents and Conditions: (a) n-BuLi, THF, −78 oC to 0 oC, 1 h, then 4 N HCl/dioxane, RT, 1 h, 60%; (b) alkyl triflate, DIPEA, 1,4-dioxane, 90 oC, 63-74% or isobutyrylaldehyde, Na(OAc)3BH, THF, 0 oC, 56%; (c) benzophenone imine, Pd2dba3, Rac-BINAP, NaOtBu, toluene, 90 oC, then 1 N aq. HCl, 71-85%; (d) nBuLi, THF, −78 oC to 0 oC, 1 h, then 4 N HCl/dioxane, RT, 4 h; e) NH2OH, NH2OH.HCl, EtOH, reflux. 84% over 2 steps; (f) alkyl triflate, DIPEA, 1,4-dioxane, 90 oC, 44-100% or 1-fluorocyclopropane-1- carboxylic acid, HATU, Et3N, DMF, RT, 61%, then BH3.THF, THF, 65 oC, 82%.

[α]26 D -147 (c 2.3, MeOH); 1H NMR (500 MHz, DMSO-d6, 27 °C) 1.08 (d, J = 6.6 Hz, 3H), 1.64 (dp, J = 25.0, 6.3 Hz, 2H), 2.45 (t, J = 6.9 Hz, 2H), 2.73(t, J = 6.8 Hz, 2H), 2.84 (dd, J = 17.1, 8.2 Hz, 1H), 2.96 (dt, J = 19.6, 9.8 Hz, 1H), 3.07 (dd, J = 17.2, 4.6 Hz, 1H), 3.49 (m, 1H), 3.50 – 3.58 (m, 1H), 3.58 – 3.66 (m, 2H), 3.92 (h, J = 6.5 Hz, 1H), 4.44 (dtd, J = 47.4, 6.1, 1.3 Hz, 2H), 4.93 (s, 1H), 6.23 (d, J = 6.9 Hz, 1H), 6.80 (d, J = 8.6 Hz, 1H), 6.83 (dt, J = 8.8, 2.0 Hz, 1H), 6.97 (d, J = 8.5 Hz, 1H), 7.22 (d, J = 8.6 Hz, 1H), 7.73 (d, J = 2.8 Hz, 1H), 8.05 (d, J = 1.3 Hz, 1H), 12.97 (s, 1H); 13C NMR (125 MHz, DMSO-d6, 27 °C) 16.2, 28.2 (d, J = 19.4 Hz), 30.1, 43.0, 47.3, 48.7 (q, J = 30.1 Hz), 54.8 (d, J = 5.6 Hz), 61.3 (2C), 67.1, 82.0 (d, J = 161.3 Hz), 107.5, 119.0, 122.4, 123.7, 126.1, 126.2 (q, J = 278.5 Hz), 126.4, 127.5, 131.7, 132.9, 138.5, 142.3, 150.0; 19F NMR (376 MHz, DMSO-d6, 27 °C) -218.1 (1F), -69.7 (3F); m/z (ES+), [M+H]+ = 477, HRMS (ESI) (MH+ ); calcd, 477.2408; found, 477.2390

PAT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018077630&_cid=P22-MTUWHT-99930-1

Example 17

Preparation ofN-(1-(3-fluoropropyl)azetidin-3-yl)-6-((6S,8R)-8-methyl-7-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-3H-pyrazolo[4,3-f]isoquinolin-6-yl)pyridin-3-amine

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AZD9833 is selective oestrogen receptor degrader (SERD). It works by breaking down the site where oestrogen attaches to the cancer cell. This can help stop or slow the growth of hormone receptor breast cancer. Researchers think that AZD9833 with palbociclib might work better than anastrozole and palbociclib.

AZD9833 + palbociclib

The patients will receive AZD9833 (75 mg, PO, once daily) + palbociclib (PO, once daily, 125 mg for 21 consecutive days followed by 7 days off treatment) + anastrozole placebo (1 mg, PO, once daily)

SERENA-1: Study of AZD9833 Alone or in Combination in Women With Advanced Breast Cancer. (clinicaltrials.gov)…..https://veri.larvol.com/news/azd9833/drug

P1, N=305, Recruiting, AstraZeneca | Trial primary completion date: Dec 2022 –> Oct 2023

2 months ago, Trial primary completion date|

HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • PGR (Progesterone receptor)|

HER-2 negative, Ibrance (palbociclib) • everolimus • Verzenio (abemaciclib) • capivasertib (AZD5363) • camizestrant (AZD9833)

DescriptionCamizestrant (AZD-9833) is a potent and orally active estrogen receptor (ER) antagonist. Camizestrant is used for the study of ER+ HER2-advanced breast cancer[1].
IC50 & TargetIC50: estrogen receptor (ER)[1]
In VitroCamizestrant is extracted from patent US20180111931A1, example 17[1].MCE has not independently confirmed the accuracy of these methods. They are for reference only.
In VivoCamizestrant (oral administration; 0.2-50 mg/kg; 20 days) exhibits anti-tumour efficacy as a dose-dependent manner in human parental MCF7 mice xenograft[1].
Camizestrant (oral administration; 0.8-40 mg/kg; 30 days) decreases tumor growth as a dose-dependent manner. It gives almost complete tumour growth inhibition at the doses >10 mg/kg in mice[1].
MCE has not independently confirmed the accuracy of these methods. They are for reference only.Animal Model:Human ESR1 mutant breast cancer patient derived xenograft with CTC174 cells in female NSG mice[1]Dosage:0.8 mg/kg, 3 mg/kg, 10 mg/kg, 20 mg/kg, 40 mg/kgAdministration:Oral administration; 30 days; once dailyResult:Inhibited tumor growth in a dose-dependent manner.
Clinical TrialNCT NumberSponsorConditionStart DatePhaseNCT04711252AstraZenecaER-Positive HER2-Negative Breast CancerJanuary 28, 2021Phase 3NCT04964934AstraZenecaER-Positive HER2-Negative Breast CancerJune 30, 2021Phase 3NCT04214288AstraZenecaAdvanced ER-Positive HER2-Negative Breast CancerApril 22, 2020Phase 2NCT04588298AstraZenecaHER2-negative Breast CancerNovember 2, 2020Phase 2NCT04541433AstraZenecaER&addition; HER2- Advanced Breast CancerSeptember 29, 2020Phase 1NCT03616587AstraZenecaER&addition; HER2- Advanced Breast CancerOctober 11, 2018Phase 1NCT04546347AstraZeneca|Quotient SciencesHealthy VolunteersSeptember 17, 2020Phase 1NCT04818632AstraZenecaER&addition;, HER2-, Metastatic Breast CancerOctober 11, 2021Phase 1
Clinical data
Pronunciation/ˌkæmɪˈzɛstrənt/
KAM-ih-ZES-trənt
Trade namesEtcamah
Other namesAZD9833
AHFS/Drugs.cometcamah
License dataUS DailyMedCamizestrant
Routes of
administration
By mouth
Drug classAntineoplastic
ATC codeL02BA05 (WHO)
Legal status
Legal statusUS: ℞-only[1]EU: Rx-only[2][3]
Identifiers
IUPAC name
CAS Number2222844-89-3
PubChem CID134453496
IUPHAR/BPS12716
DrugBankDB19218
ChemSpider103820855
UNIIJUP57A8EPZ
KEGGD12049
ChEMBLChEMBL4650365
Chemical and physical data
FormulaC24H28F4N6
Molar mass476.524 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

PAT

REF

  1.  “FDA grants accelerated approval to camizestrant with a CDK4/6 inhibitor for ESR1-Mutated HR-positive, HER2-negative locally advanced or metastatic breast cancer”. U.S. Food and Drug Administration FDA. 4 September 2026. Retrieved 4 September 2026.
  2.  “Etcamah EPAR”European Medicines Agency (EMA). 22 May 2026. Retrieved 30 May 2026. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
  3.  “Etcamah PI”Union Register of medicinal products. 22 July 2026. Retrieved 8 September 2026.
  4.  Scott JS, Moss TA, Balazs A, Barlaam B, Breed J, Carbajo RJ, et al. (December 2020). “Discovery of AZD9833, a Potent and Orally Bioavailable Selective Estrogen Receptor Degrader and Antagonist”. Journal of Medicinal Chemistry63 (23): 14530–14559. doi:10.1021/acs.jmedchem.0c01163PMID 32910656.
  5.  “FDA Grants Accelerated Approval to a New Breast Cancer Treatment” (Press release). U.S. Food and Drug Administration FDA. 4 September 2026. Retrieved 8 September 2026.
  6.  Saseendran S (11 June 2026). “UAE first country in world to approve new oral breast cancer drug for hormone-resistant cases”.
  7.  World Health Organization (2022). “International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 87”. WHO Drug Information36 (1). hdl:10665/352794.

////////////Camizestrant, AZD 9833, AZ 14066724, UNII-JUP57A8EPZ, WHO 11592, PHASE 2, ASTRA ZENECA, CANCER, FDA 2026, APPROVALS 2026, Etcamah


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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA, ROW2TECH, NIPER-G, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email amcrasto@gmail.com, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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