1. Signaling Pathways
  2. Metabolic Enzyme/Protease
  3. Carbonic Anhydrase

Carbonic Anhydrase

Anhydrase

Carbonate dehydratase

Carbonic anhydrase (CA) is a zinc-containing enzyme that catalyzes the reversible hydration of carbon dioxide: CO2 + H2O ⇋ HCO3- + H+. Eight genetically distinct carbonic anhydrase enzyme families (α-, β-, γ- δ-, ζ-, η-, θ- and ι- CAs) were described to date. Carbonic anhydrases are involved in numerous physiological and pathological processes. Many of them are important therapeutic targets with the potential to be inhibited to treat a range of disorders including oedema, glaucoma, obesity, cancer, epilepsy, and osteoporosis.

The carbonic anhydrase reaction is involved in many physiological and pathological processes, including respiration and transport of CO2 and bicarbonate between metabolizing tissues and lungs; pH and CO2 homeostasis; electrolyte secretion in various tissues and organs; biosynthetic reactions (such as gluconeogenesis, lipogenesis, and ureagenesis); bone resorption; calcification; and tumorigenicity. α-CAs are Zn2+ metalloproteins expressed in animals, vertebrates, prokaryotes, fungi, algae, protozoa, and plants. Sixteen mammalian α-CA isoforms are known to be involved in many diseases such as glaucoma, edema, epilepsy, obesity, hypoxic tumors, neuropathic pain, arthritis, neurodegeneration, etc.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-13650
    Indisulam
    Inhibitor 99.80%
    Indisulam (E 7070) is a carbonic anhydrase inhibitor with anticancer activity. Indisulam (E 7070) is a sulfonamide agent that targets the G1 phase of the cell cycle. Indisulam (E 7070) causes a blockade in the G1/S transition through inhibition of the activation of both CDK2 and cyclin E. Indisulam (E 7070) targets splicing by inducing RBM39 degradation via recruitment to DCAF15.
    Indisulam
  • HY-B0782
    Acetazolamide
    Inhibitor 99.89%
    Acetazolamide is a carbonic anhydrase (CA) IX inhibitor with an IC50 of 30 nM for hCA IX. Acetazolamide has diuretic, antihypertensive and anti-gonococcal activities.
    Acetazolamide
  • HY-13513
    U-104
    Inhibitor 99.95%
    U-104 (SLC-0111) is a potent carbonic anhydrase (CA) inhibitor for CA IX and CA XII with Ki values of 45.1 nM and 4.5 nM, respectively. U-104 shows a significant delay in tumor growth in mice model.
    U-104
  • HY-Y0271
    Urea
    ≥98.0%
    Urea is a powerful protein denaturant via both direct and indirect mechanisms. A potent emollient and keratolytic agent. Used as a diuretic agent. Blood urea nitrogen (BUN) has been utilized to evaluate renal function. Widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry.
    Urea
  • HY-B1480
    Ethoxzolamide
    Inhibitor 99.85%
    Ethoxzolamide is a carbonic anhydrase inhibitor with Ki of 1 nM.
    Ethoxzolamide
  • HY-P10761
    DPI-4452
    Modulator 98.27%
    DPI-4452 is a CAIX-targeting cyclic peptide with a DOTA cage, and can be chelated with radionuclide for CAIX-expressing tumor PET-CT imaging and study. DPI-4452 specifically and selectively binds CAIX without interaction with an in vitro off-target receptor panel of 55 targets (IC50 for recombinant hCAIX: 130 nM). Radiolabeled DPI-4452 inhibits tumor growth in HT-29 and SK-RC-52 xenograft mouse models. DPI-4452 can be used for the synthesis/research of Radionuclide-Drug Conjugates (RDCs).
    DPI-4452
  • HY-402723
    hCAVII/IX-IN-1
    Inhibitor
    hCAVII/IX-IN-1 (compound 4) is a hCAVII/IX inhibitor, with Ki values ​​of 56.5 nM and 38.2 nM, respectively. hCAVII/IX-IN-1 can be used in anticancer research.
    hCAVII/IX-IN-1
  • HY-W012168
    4-Chloro-3-sulfamoylbenzoic acid
    Inhibitor 99.79%
    4-Chloro-3-sulfamoylbenzoic acid is an inhibitor of human carbonic anhydrase, targeting the cytosolic isoforms hCA I and hCA II (glaucoma-associated), and the transmembrane isoforms hCA IV and hCA IX (tumor hypoxia-induced).
    4-Chloro-3-sulfamoylbenzoic acid
  • HY-B0122
    Topiramate
    Inhibitor ≥98.0%
    Topiramate (McN 4853) is a broad-spectrum antiepileptic agent. Topiramate is a GluR5 receptor antagonist. Topiramate produces its antiepileptic effects through enhancement of GABAergic activity, inhibition of kainate/AMPA receptors, inhibition of voltage-sensitive sodium and calcium channels, increases in potassium conductance, and inhibition of carbonic anhydrase.
    Topiramate
  • HY-N0639
    Punicalin
    Inhibitor 99.89%
    Punicalin is a species that can be isolated from the leaves of Punica granatum. Punicalin is an active molecule against hepatitis b virus (HBV). Punicalin can induce pyroptosis. Punicalin is a Carbonic anhydrase inhibitor. Punicalin blocks the binding of S-glycoprotein and ACE2 receptors. Pnuicalin has anti-inflammatory, antioxidant and antiviral activity.
    Punicalin
  • HY-P99023
    Girentuximab
    Inhibitor 99.90%
    Girentuximab (G250) is a chimeric monoclonal antibody that binds carbonic anhydrase IX (CAIX), a cell surface glycoprotein ubiquitously expressed in clear cell renal cell carcinoma (ccRCC).
    Girentuximab
  • HY-B0553
    Methazolamide
    Inhibitor 99.41%
    Methazolamide (L584601) is a BBB-penatrable and orally active carbonic anhydrase inhibitor, with a Ki of 14 nM for human carbonic anhydrase II. Methazolamide can reduce intraocular pressure and has a neuroprotective effect, being able to inhibit neuronal apoptosis. Methazolamide can be used in the research of ophthalmic diseases such as glaucoma and cerebrovascular diseases such as subarachnoid hemorrhage.
    Methazolamide
  • HY-B0124
    Zonisamide
    Inhibitor 99.85%
    Zonisamide (AD 810) is an orally active carbonic anhydrase inhibitor, with Kis of 35.2 and 20.6 nM for hCA II and hCA V, respectively. Zonisamide exerts neuroprotective effects through anti-apoptosis and upregulating MnSOD levels. Zonisamide also increases the expression of Hrd1, thereby improving cardiac function in AAC rats. Zonisamide can be used in studies of seizure, parkinson’s disease and cardiac hypertrophy.
    Zonisamide
  • HY-B0283
    Acipimox
    Inhibitor 99.86%
    Acipimox (K-9321), a nicotinic acid analogue, is an antilipolytic compound. Acipimox stimulates leptin releas, inhibits lipolysis and suppresses systemic levels of free fatty acids (FFAs) and improves insulin sensitivity.
    Acipimox
  • HY-B0782A
    Acetazolamide sodium
    Inhibitor 99.54%
    Acetazolamide sodium is a carbonic anhydrase (CA) IX inhibitor with an IC50 of 30 nM for hCA IX. Acetazolamide sodium has diuretic, antihypertensive and anti-gonococcal activities.
    Acetazolamide sodium
  • HY-B0109A
    Dorzolamide hydrochloride
    Inhibitor 99.92%
    Dorzolamide (L671152) hydrochloride is a potent carbonic anhydrase II inhibitor, with IC50 values of 0.18 nM and 600 nM for red blood cell CA-II and CA-I respectively. Dorzolamide possesses anti-tumor activity.
    Dorzolamide hydrochloride
  • HY-B0588
    Brinzolamide
    Inhibitor 99.61%
    Brinzolamide (AL-4862) is a selective carbonic anhydrase II inhibitor with anIC50 value of 3.2 nM. Brinzolamide hydrochloride reduces intraocular pressure (IOP) by inhibiting ciliary CA-II and decreasing atrial fluid secretion. Brinzolamide can be used in glaucoma disease research.
    Brinzolamide
  • HY-B1424
    Benzthiazide
    Inhibitor 99.70%
    Benzthiazide is a long-acting diuretic and a hypertension agent. Benzthiazide is an inhibitor of carbonic anhydrase 9 (CA9), with Kis of 8.0, 8.8 and 10 nM for CA9, CA2 and CA1, respectively. Benzthiazide also suppresses proliferation of cancer cells.
    Benzthiazide
  • HY-110243
    CAIX Inhibitor S4
    Inhibitor 99.04%
    CAIX Inhibitor S4 is a potent and selective inhibitor of carbonic anhydrase IX/XII (CA IX/XII), with a Ki of 7 nM and 2 nM, respectively. CAIX Inhibitor S4 also inhibits CA II and CA I (Ki=546 and 5600 nM, respectively). CAIX Inhibitor S4 can inhibit the number of lung metastasis in orthotopic MDA-MB-231 mouse model without affecting primary tumor growth.
    CAIX Inhibitor S4
  • HY-P1775
    Carbonic anhydrase, Bovine erythrocytes
    Carbonic anhydrase, Bovine erythrocytes (EC 4.2.1.1) is ubiquitous zinc-containing metalloenzyme present in prokaryotes and eukaryotes. Carbonic anhydrase can catalyze reversible conversion of carbon dioxide to bicarbonate and protons. Carbonic anhydrase can be used for the research of cancer, glaucoma, obesity and epilepsy.

    Carbonic anhydrase, Bovine erythrocytes
Cat. No. Product Name / Synonyms Species Source

CA

CA I

CA Ⅱ

CA IX

CA XII

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Please try each isoform separately.

Carbonic Anhydrase Inhibitors, Activators & Modulators
Product NameCACA ICA ⅡCA IXCA XIIPurity    
Acetazolamide   
CA IX
 99.89%
U-104   
CA IX
CA XII
99.95%
DPI-4452   
hCA IX, Kd: 0.25 nM
 98.27%
hCAVII/IX-IN-1   
hCA IX, Ki: 38.2 nM
 
Girentuximab   
CA IX
 99.90%
Methazolamide  
CA Ⅱ
  99.41%
Zonisamide  
CA Ⅱ
  99.85%
Acetazolamide sodium   
CA IX
 99.54%
Dorzolamide hydrochloride  
CA Ⅱ
  99.92%
Brinzolamide  
CA Ⅱ
  99.61%
CAIX Inhibitor S4   
CA IX
 99.04%
Benzolamide  
CA Ⅱ
  99.07%
Acetazolamide (Standard)   
CA IX
 99.69%
Furagin   
hCA IX, Ki: 260 nM
hCA XII, Ki: 57 nM
99.84%
2-Aminobenzenesulfonamide   
CA IX
 99.90%
Halazone  
CA Ⅱ
  
Benzenesulphonamide  
CA Ⅱ
  99.51%
Fluorometholone acetate  
CA Ⅱ
  98.54%
Carbonic anhydrase inhibitor 2  
CA Ⅱ
  98.40%
hCAIX-IN-18 
hCA I, IC50: 3.5 nM
hCA II, IC50: 9.4 nM
hCA IX, IC50: 43 nM
hCA XII, IC50: 8.2 nM
98.52%
Procodazole   
CA IX, IC50: 8.35 μM
 99.73%
EMAC10101d  
CA Ⅱ
  99.77%
Enpp/Carbonic anhydrase-IN-1  
CA Ⅱ, IC50: 0.88 μM
CA IX, IC50: 1.02 μM
 99.57%
hCAII-IN-8  
hCA II, IC50: 0.18 μM
  99.41%
hCAXII-IN-9 
hCA I, Ki: 7192.6 nM
hCA II, Ki: 188.6 nM
hCA IX, Ki: >100000 nM
hCA XII, Ki: 28 nM
Lasamide   
hCA IX, Ki: 2.67 nM
hCA XII, Ki: 7.54 nM
99.97%
hCAIX/XII-IN-5   
hCA IX, Ki: 93.9 nM
hCA XII, Ki: 85.7 nM
α-Glucosidase-IN-63  
hCA II, Ki: 7.0 nM
hCA IX, Ki: 64.1 nM
hCA XII, Ki: 19.9 nM
hCAIX/XII-IN-6  
hCA II, Ki: 2950 nM
hCA IX, Ki: 4.1 nM
hCA XII, Ki: 7.7 nM
hCAIX-IN-6    
CA XII
BChE-IN-36
hCA VB, KA: 893 nM
hCA I, KA: 266 nM
hCA II, KA: 76.9 nM
  
hCAII-IN-9  
hCA II, IC50: 1.18 μM
hCA IX, IC50: 0.17 μM
hCA XII, IC50: 2.99 μM
β-Glucuronidase/hCAII-IN-2  
hCA II, IC50: 21.77 μM
  
β-Glucuronidase/hCAII-IN-1  
hCA II, IC50: 4.91 μM
  
hCAXII-IN-1   
CA IX
 
hCAIX/XII-IN-11   
hCA IX, Ki: 0.7 μM
hCA XII, Ki: 0.7 μM
Carbonic anhydrase inhibitor 14 
hCA I, Ki: 1203 nM
hCA II, Ki: 99.7 nM
hCA IX, Ki: 9.4 nM
hCA XII, Ki: 27.7 nM
Carbonic anhydrase inhibitor 3  
CA Ⅱ
  
CA Ⅱ-IN-1  
hCA II, : 0.44 μM
  
CAIX/CAXII-IN-1  
CA Ⅱ
CA IX
CA XII
Brinzolamide hydrochloride  
hCA II, IC50: 3.2 nM
  
hCAIX-IN-24   
hCA IX, Ki: 32.1 nM
hCA XII, Ki: 8.1 nM
hCAIX-IN-19   
hCA IX, Ki: 6.2 nM
 
AChE/hCA I-IN-1 
hCA I, IC50: 283.3 nM
hCA II, IC50: 265.9 nM
  
hCAIX-IN-17  
CA Ⅱ
CA IX
CA XII
Carbonic anhydrase/AChE-IN-1 
hCA I, Ki: 24.42 nM
hCA II, Ki: 19.95 nM
  
hCAIX-IN-14   
hCA IX, Ki: 134.8 nM
 
Carbonic anhydrase inhibitor 10   
CA IX
 
hCA/VEGFR-2-IN-5   
hCA IX, IC50: 40 nM
hCA XII, IC50: 3.2 nM
COX-2-IN-30 
hCA I, Ki: 183.4 nM
hCA II, Ki: 81.4 nM
hCA IX, Ki: 38.4 nM
hCA XII, Ki: 21.6 nM
hCAI/II-IN-10 
hCA I, IC50: 4.32 nM
hCA II, IC50: 3.89 nM
  
hCAII-IN-5  
hCA II, IC50: 4.55 μM
  
hCAIX-IN-22    
hCA XII, Ki: 9.7 nM
hCAII-IN-6  
CA Ⅱ
  
AChE/CA I-IN-1 
hCA I, Ki: 0.53 μM
   
Enpp/Carbonic anhydrase-IN-2   
CA IX, IC50: 0.33 μM
CA XII, IC50: 0.68 μM
99.76%
CA IX-IN-2  
CA Ⅱ, IC50: 430 nM
CA IX, IC50: 5.6 nM
CA XII, IC50: 7.4 nM
hCA I-IN-4 
hCA I, Ki: 29.94 nM
hCA II, Ki: 17.72 nM
  
hCAII/IX-IN-1  
hCA II, Ki: 7.4 nM
hCA IX, Ki: 7 nM
 
DTP348   
CA IX, Ki: 8.3 nM
 
HCAIX-IN-2 
CA I, Ki: 2481 nM
hCA II, Ki: 456.2 nM
hCA IX, Ki: 24.6 nM
hCA XII, Ki: 45.3 nM
hA2A/hCA XII modulator 1  
CA Ⅱ
 
CA XII
hCA I-IN-3 
hCA I, IC50: 4.77 nM
hCA II, IC50: 9.66 nM
  
hCAII/XII-IN-1  
CA Ⅱ, Ki: 9.4 nM
 
hCA XII, Ki: 8.4 nM
VM4-037   
CA IX
 
GZ22-4  
CA Ⅱ, Kd: 200 nM
CA IX, Kd: 0.2 nM
CA XII, Kd: 80 nM
DPP IV/hCA II-IN-1 
CA I, Ki: 0.2615 μM
CA Ⅱ, IC50: 36.1 nM
hCA II, Ki: 0.0361 μM
hCA IX, Ki: 0.1328
 
CAII-IN-3  
bovine CA-II, IC50: 13.4 μM
  
Carbonic anhydrase inhibitor 12  
CA Ⅱ
  
hCAII-IN-10 
hCA I, IC50: 29.2 μM
hCA II, IC50: 14 nM
  
hCAII-IN-4  
hCA II, IC50: 7.78 μM
  
Carbonic anhydrase inhibitor 9  
CA Ⅱ
CA IX
 
hCAIX-IN-15   
hCA IX, Ki: 38.8 nM
 
CAIX/CAXII-IN-2   
hCA IX, Ki: 8.9 nM
hCA XII, Ki: 5.3 nM
CA IX/VEGFR-2-IN-2   
CA IX, Ki: 3.1 μM
 
hCAIX/XII-IN-8 
hCA I, Ki: 5269 nM
hCA II, Ki: 72.0 nM
hCA IX, Ki: 8.5 nM
hCA XII, Ki: 6.7 nM
hCAIX-IN-21 
hCA I, Ki: 13600 nM
hCA II, Ki: 3.5 nM
hCA IX, Ki: 5.2 nM
hCA XII, Ki: 12.6 nM
Methazolamide-d6  
CA Ⅱ
  
CA IX/VEGFR-2-IN-3  
CA Ⅱ, IC50: 41 nM
  
hCAIX-IN-10   
CA IX
 
hCAII-IN-3  
CA Ⅱ
CA IX
CA XII
hCAI/II-IN-8 
hCA I, IC50: 21.35 nM
hCA II, IC50: 7.12 nM
  
hCAIX-IN-23   
hCA IX, Ki: 10.4 nM
hCA XII, Ki: 8.5 nM
CA/MAO-B-IN-1
hCA VB, IC50: 8.8 nM
hCA VA, IC50: 9.6 nM
hCA I, IC50: 553.1 nM
hCA II, IC50: 41.1 nM
 
hCA XII, IC50: 196 nM
98.34%
hCAIX/XII-IN-9 
hCA I, Ki: 1658 nM
hCA II, Ki: 184.8 nM
hCA IX, Ki: 8.9 nM
hCA XII, Ki: 64.8 nM
ALP/Carbonic anhydrase-IN-1  
CA Ⅱ, IC50: 0.44 μM
CA IX, IC50: 1.61 μM
CA XII, IC50: 0.51 μM
99.90%
HCAIX-IN-1 
hCA I, Ki: 694.9 nM
hCA II, Ki: 126.6 nM
hCA IX, Ki: 3.3 nM
hCA XII, Ki: 9.8 nM
Dorzolamide (hydrochloride) (Standard)  
CA Ⅱ
  
Acetazolamide-13C2,d3   
CA IX
 
Carbonic anhydrase inhibitor 20 
hCA I, Ki: 47.6 nM ([1])
hCA II, Ki: 36.5 nM ([1])
hCA IX, Ki: 8.3 nM ([1])
hCA XII, Ki: 2.7 nM ([1])
hCAIX-IN-12   
CA IX
 
hCAIX/XII-IN-1   
CA IX
 
hCAIX/XII-IN-7 
hCA I, Ki: 503.7 nM
hCA II, Ki: 59 nM
hCA IX, Ki: 3.2 nM
hCA XII, Ki: 9.2 nM
CAIX/CAXII-IN-4  
CA Ⅱ, Ki: 3.035 μM
CA IX, Ki: 1.324 μM
CA XII, Ki: 0.435 μM
Phenylsulfamide  
hCA II, Kd: 45.50 μM
hCA II, Ki: 79.60 μM
  
hCAIX-IN-8   
CA IX
 
Dorzolamide-d5  
CA Ⅱ
  
L-662583  
hCA II, IC50: 0.7 nM
  
CA IX-IN-3   
CA IX, IC50: 0.48 nM
 
Carbonic anhydrase inhibitor 25 
hCA I
hCA II
  
hCAI/II-IN-7
bovine CA, Ki: 20.57 μM
hCA I, Ki: 23 nM
hCA II, Ki: 44 nM
  
hCAIX/XII-IN-14  
hCA II, Ki: 9.4 nM
hCA IX, Ki: 5.6 nM
hCA XII, Ki: 6.3 nM
Carbonic anhydrase inhibitor 19 
hCA I, IC50: 49.1 nM
hCA II, IC50: 9.4 nM
hCA IX, IC50: 4.7 nM
hCA XII, IC50: 6.7 nM