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
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
XLogP
-0.3
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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