General Information
Drug ID
DR01407
Drug Name
Pemirolast
Synonyms
Pemirolastum; Pemirox; Pemirolast [INN]; Pemiroplast Potassium; Alamast (TN); Alegysal (TN); Pemirolast (INN); Pemirolastum [INN-Latin]; Pemirox (TN); 9-TBX; 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido(1,2-a)pyrimidin-4-one; 9-methyl-3-(2H-tetrazol-5-yl)pyrido[1,2-a]pyrimidin-4-one
Drug Type
Small molecular drug
Indication Itching of the eye due to allergic conjunctivitis [ICD11: 9A60.02] Approved [1]
Therapeutic Class
Antiallergic Agents
Structure
<iframe style="width: 300px; height: 300px;" frameborder="0" src="https://embed.molview.org/v1/?mode=balls&cid=57697"></iframe>
3D MOL 2D MOL
Formula
C10H8N6O
Canonical SMILES
CC1=CC=CN2C1=NC=C(C2=O)C3=NNN=N3
InChI
InChI=1S/C10H8N6O/c1-6-3-2-4-16-9(6)11-5-7(10(16)17)8-12-14-15-13-8/h2-5H,1H3,(H,12,13,14,15)
InChIKey
HIANJWSAHKJQTH-UHFFFAOYSA-N
CAS Number
CAS 100299-08-9
Pharmaceutical Properties Molecular Weight 228.21 Topological Polar Surface Area 87.1
Heavy Atom Count 17 Rotatable Bond Count 1
Hydrogen Bond Donor Count 1 Hydrogen Bond Acceptor Count 5
PubChem CID
57697
PubChem SID
8185373 , 14773738 , 14822841 , 43115342 , 46509034 , 50065081 , 50563413 , 57313910 , 85209679 , 93166875 , 96024435 , 104313292 , 123092154 , 128063839 , 131269071 , 134338322 , 135035415 , 137007584 , 137035161 , 142971147 , 160964226 , 162178777 , 164814579 , 175268367 , 178103901 , 179150951 , 179326618 , 223797099 , 226416213 , 252355732
ChEBI ID
CHEBI:134936
TTD Drug ID
D0K5LQ
DT(s) Transporting This Drug MRP2 Transporter Info Multidrug resistance-associated protein 2 Substrate [2]
P-GP Transporter Info P-glycoprotein 1 Substrate [2]
References
1 Pemirolast was approved by FDA. The official website of the U.S. Food and Drug Administration. (2019)
2 Human intestinal transporter database: QSAR modeling and virtual profiling of drug uptake, efflux and interactions. Pharm Res. 2013 Apr;30(4):996-1007.

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