ChemicalBook > CAS DataBase List > Crisaborole

Crisaborole

Product Name
Crisaborole
CAS No.
906673-24-3
Chemical Name
Crisaborole
Synonyms
4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]benzonitrile AN 2728;AN 2728;CS-1895;Cleboro;Creborol;PF-06930164;Crisaborole;AN-2728, >=98%;AN2728/AN-2728;D4-Crisaborole
CBNumber
CB42518350
Molecular Formula
C14H10BNO3
Formula Weight
251.05
MOL File
906673-24-3.mol
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Crisaborole Property

Melting point:
>130°C (softened)
Boiling point:
425.9±55.0 °C(Predicted)
Density 
1.33±0.1 g/cm3(Predicted)
storage temp. 
room temp
solubility 
DMSO (Slightly), Methanol (Slightly)
form 
powder
pka
7.00±0.20(Predicted)
color 
white to beige
Stability:
Hygroscopic
InChI
InChI=1S/C14H10BNO3/c16-8-10-1-3-12(4-2-10)19-13-5-6-14-11(7-13)9-18-15(14)17/h1-7,17H,9H2
InChIKey
USZAGAREISWJDP-UHFFFAOYSA-N
SMILES
C(#N)C1=CC=C(OC2=CC=C3B(O)OCC3=C2)C=C1
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P311Call a POISON CENTER or doctor/physician.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
PZ0037
Product name
Crisaborole
Purity
≥98% (HPLC)
Packaging
5MG
Price
$108
Updated
2025/07/31
Sigma-Aldrich
Product number
PZ0037
Product name
Crisaborole
Purity
≥98% (HPLC)
Packaging
25MG
Price
$436
Updated
2025/07/31
Cayman Chemical
Product number
21455
Product name
AN2728
Purity
≥98%
Packaging
25mg
Price
$62
Updated
2024/03/01
Cayman Chemical
Product number
21455
Product name
AN2728
Purity
≥98%
Packaging
50mg
Price
$115
Updated
2024/03/01
Cayman Chemical
Product number
21455
Product name
AN2728
Purity
≥98%
Packaging
100mg
Price
$216
Updated
2024/03/01
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Crisaborole Chemical Properties,Usage,Production

Description

Crisaborole is a phosphodiesterase- 4 (PDE4) inhibitor that was approved by FDA on December 14, 2016 as Eucrisa, a topical treatment of for mild to moderate atopic dermatitis (AD) in patients aged two years and older. The drug, which was developed by Anacor Pharmaceuticals and later acquired and marketed by Pfizer, is delivered as a 2% ointment, which is applied topically. Its structure contains a boron atom, which facilitates skin penetration and binding to the bimetal center of the phosphodiesterase 4 enzyme. The unique employment of boron within the chemical structure of the drug is designed to enable selective engagement of PDE4 (an enzyme involved in the conversion of cAMP into AMP, which signals for downstream inflammatory events), effective penetration of the drug through human skin, and rapid clearance to limit systemic circulation.

Uses

A series of phenoxy benzoxaboroles were synthesized and screened for their inhibitory activity against PDE4 and cytokine release. 5-(4-Cyanophenoxy)-2,3-dihydro-1-hydroxy-2,1-benzoxaborole (AN2728) showed potent activity both in vitro and in vivo. AN2728 is being studied as an anti-inflammatory agent.

Definition

ChEBI: Crisaborole is a member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults. It has a role as a phosphodiesterase IV inhibitor, an antipsoriatic and a non-steroidal anti-inflammatory drug. It is a benzoxaborole, an aromatic ether and a nitrile. ?

Biochem/physiol Actions

Crisaborole is a non-steroidal anti-inflammatory phosphodiesterase 4 (PDE4) inhibitor. Crisaborole has an IC50 value of 490 nM for PDE4 with similar IC50 values for release of cytokines TNF-α, IL-2, and IFN-γ, and shows little inhibition against other PDE isozymes. Crisaborole has been approved as a topical treatment for atopic dermatitis.

Side effects

EUCRISA may cause side effects.
Allergic reactions. EUCRISA may cause allergic reactions at or near the application site. These can be serious and may include hives, itching, swelling, and redness.
www.eucrisa.com

Synthesis

Several disclosures describing synthetic approaches to ethereal boron-containing anti-inflammatory compounds have been published by Anacor. Commercially available bromobenzaldehyde 134 was protected as the corresponding acetal upon subjection to warm ethylene glycol in the presence of catalytic p-toluenesulfonic acid. This was followed by nucleophilic aromatic substitution involving 4-fluorobenzonitrile and subsequent acetal deprotection to furnish diaryl ether 136. Although multiple approaches to crisaborole have been reported from this intermediate diaryl ether 136, the published literature approach involves the following sequence: reduction of the aldehyde with sodium borohydride followed by THP protection to furnish bromobenzene 137, which then underwent lithium-halogen exchange prior to quenching with triisopropyl borate and acidification to arrive at crisaborole (XIII). Alternatively, patents from Anacor describe a general approach employing a Miyaura coupling of 136, enabling the installation of the corresponding pincacol borane, which could then be exposed to reduction conditions using sodium borohydride followed by boric acid wash, aqueous workup, and lyophilization to furnish XIII.

Mode of action

Crisaborole is a Phosphodiesterase 4 Inhibitor. The mechanism of action of crisaborole is as a Phosphodiesterase 4 Inhibitor.

Crisaborole Preparation Products And Raw materials

Raw materials

Preparation Products

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Crisaborole Suppliers

China 445 India 13 United Kingdom 1 United States 19 Global 478
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View Lastest Price from Crisaborole manufacturers

Jinan Ruitong Biotech Co., Ltd.
Product
Crisaborole
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
1
Release date
2025-08-22
Wuhan Haorong Biotechnology Co.,Ltd
Product
Crisaborole 906673-24-3
Price
US $1.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10000
Release date
2025-07-08
WUHAN FORTUNA CHEMICAL CO., LTD
Product
Crisaborole 906673-24-3
Price
US $0.00/KG
Min. Order
10g
Purity
99%min
Supply Ability
10kg
Release date
2021-09-13

906673-24-3, CrisaboroleRelated Search:

4-bromo-3-(1,3-dioxolan-2-yl)phenol Crisaborole Impurity 5 4-(4-BroMo-3-(1,3-dioxolan-2-yl)phenoxy)benzonitrile

  • 4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]benzonitrile AN 2728
  • AN-2728, >=98%
  • AN2728, Crisaborole
  • Crisaborole (AN2728)
  • AN 2728
  • AN2728/AN-2728
  • 4-((1-Hydroxy-1,3-dihydrobenzo-[c][1,2]oxaborol-5-yl)oxy)benzonitrile
  • 4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]benzonitrile
  • AN-2728;AN2728;AN 2728
  • 5-(4-cyanophenoxy)-2,3-dihydro-1-hydroxy-2,1-benzoxaborole
  • Crisaborole （Eucrisa）
  • 4-[(1-Hydroxy-1,3-dihydro-2,1-benzoxaborol-5-yl)oxy]benzonitrile
  • 4-((1-hydroxy-1,3-dihydrobenzo
  • 4-[(1-HYDROXY-3H-2,1-BENZOXABOROL-5-YL)OXY]BENZONITRILE
  • CS-1895
  • AN2728; AN 2728; AN2728; AN 2728
  • PF-06930164
  • Benzonitrile, 4-[(1,3-dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]-
  • 4-((1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)oxy)benzonitrile
  • Crisaborole
  • NSAIDs for the topical treatment Crisaborole
  • Crisaborole Impurity 18
  • Crisaborole EP
  • 4-((1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborolan-5-yl)oxy)benzonitrile
  • Cleboro
  • G relenza boron
  • 4-[(1,3- dihydro -1- hydroxy -2,1- benzoxeborane -5- yl) oxy] benzonitrile *
  • Crisaborole In-House
  • Creborol
  • Crisaborole, 10 mM in DMSO
  • AN2728 906673-24-3
  • D4-Crisaborole
  • 906673-24-3
  • 941219-79-4
  • C14H10BNO3
  • API
  • 906673-24-3