KEGG   DRUG: Clemastine
Entry
D03535                      Drug                                   
Name
Clemastine (USAN)
Formula
C21H26ClNO
Exact mass
343.1703
Mol weight
343.8902
Structure
Simcomp
Class
Anti-allergic agent
 DG01557  Histamine receptor antagonist
  DG01482  Histamine receptor H1 antagonist
Metabolizing enzyme inhibitor
 DG01645  CYP2D6 inhibitor
Remark
Same as: C06913
ATC code: D04AA14 R06AA04
Chemical structure group: DG00387
Product (DG00387): D00666<JP/US>
Efficacy
Antiallergic, H1 receptor antagonist
Comment
Diphenhydramine derivative
Target
HRH1 [HSA:3269] [KO:K04149]
  Pathway
hsa04020  Calcium signaling pathway
hsa04080  Neuroactive ligand-receptor interaction
Interaction
CYP inhibition: CYP2D6 [HSA:1565]
Structure map
map07212  Histamine H1 receptor antagonists
Brite
Anatomical Therapeutic Chemical (ATC) classification [BR:br08303]
 D DERMATOLOGICALS
  D04 ANTIPRURITICS, INCL. ANTIHISTAMINES, ANESTHETICS, ETC.
   D04A ANTIPRURITICS, INCL. ANTIHISTAMINES, ANESTHETICS, ETC.
    D04AA Antihistamines for topical use
     D04AA14 Clemastine
      D03535  Clemastine (USAN)
 R RESPIRATORY SYSTEM
  R06 ANTIHISTAMINES FOR SYSTEMIC USE
   R06A ANTIHISTAMINES FOR SYSTEMIC USE
    R06AA Aminoalkyl ethers
     R06AA04 Clemastine
      D03535  Clemastine (USAN)
Risk category of Japanese OTC drugs [BR:br08312]
 Second-class OTC drugs
  Inorganic and organic chemicals
   Clemastine
    D03535  Clemastine (USAN)
Drug groups [BR:br08330]
 Anti-allergic agent
  DG01557  Histamine receptor antagonist
   DG01482  Histamine receptor H1 antagonist
    DG00387  Clemastine
     D03535  Clemastine
 Metabolizing enzyme inhibitor
  DG01645  CYP2D6 inhibitor
   DG00387  Clemastine
    D03535  Clemastine
Target-based classification of drugs [BR:br08310]
 G Protein-coupled receptors
  Rhodopsin family
   Histamine
    HRH1
     D03535  Clemastine (USAN)
Drug metabolizing enzymes and transporters [br08309.html]
 Drug metabolizing enzymes
  D03535
Drug groups [BR:br08330]
 Anti-allergic agent
  DG01557  Histamine receptor antagonist
   DG01482  Histamine receptor H1 antagonist
    DG00387  Clemastine
 Metabolizing enzyme inhibitor
  DG01645  CYP2D6 inhibitor
   DG00387  Clemastine
Other DBs
CAS: 15686-51-8
PubChem: 17397667
ChEBI: 3738
LigandBox: D03535
NIKKAJI: J9.658J
KCF data

ATOM        24
            1   C1y C    12.6951  -14.0046
            2   N1y N    12.6951  -12.6046
            3   C1a C    11.4619  -11.8926
            4   C1x C    14.0266  -14.4373
            5   C1x C    14.8495  -13.3046
            6   C1x C    14.0266  -12.1720
            7   C8x C     5.4600  -16.8000
            8   C8y C     5.4600  -18.2000
            9   C8x C     6.6724  -18.9000
            10  C8x C     7.8849  -18.2000
            11  C8y C     7.8849  -16.8000
            12  C8x C     6.6724  -16.1000
            13  C1d C     9.0973  -16.1000
            14  X   Cl    4.2476  -18.9000
            15  O2a O     9.0973  -14.7000
            16  C1b C    10.3118  -13.9988
            17  C1b C    11.5083  -14.6898
            18  C8x C    10.3097  -18.2000
            19  C8y C    10.3097  -16.8000
            20  C8x C    11.5222  -18.9000
            21  C8x C    12.7346  -18.2000
            22  C8x C    12.7346  -16.8000
            23  C8x C    11.5222  -16.1000
            24  C1a C     7.8849  -15.4000
BOND        26
            1     1   2 1
            2     2   3 1
            3     1   4 1
            4     4   5 1
            5     5   6 1
            6     2   6 1
            7     7   8 2
            8     8   9 1
            9     9  10 2
            10   10  11 1
            11   11  12 2
            12    7  12 1
            13   11  13 1
            14    8  14 1
            15   13  15 1
            16   15  16 1
            17   16  17 1
            18   18  19 1
            19   18  20 2
            20   20  21 1
            21   21  22 2
            22   22  23 1
            23   19  23 2
            24   13  19 1 #Down
            25   13  24 1 #Up
            26    1  17 1 #Down

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