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Basic Information
CAS No.: 118428-38-9
Name: d-Pimobendan
Molecular Structure:
Molecular Structure of 118428-38-9 (d-Pimobendan)
Formula: C19H18 N4 O2
Molecular Weight: 334.378
Synonyms: (+)-Pimobendan;d-Pimobendan;
Density: 1.2421 (rough estimate)
Boiling Point: 471.18°C (rough estimate)
Safety: A poison by intravenous route. When heated to decomposition it emits toxic vapors of NOx.
PSA: 79.37000
LogP: 2.86300
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Chemistry

Molecular Structure of (+)-Pimobendan (CAS NO. 118428-38-9):

IUPAC Name: 3-[2-(4-Methoxyphenyl)-3H-benzimidazol-5-yl]-4-methyl-4,5-dihydro-1H-pyridazin-6-one 
Molecular Formula: C19H18N4O2
Molecular Weight: 334.371820 g/mol
XLogP3-AA: 2.7
H-Bond Donor: 2
H-Bond Acceptor: 4
Canonical SMILES: CC1CC(=O)NN=C1C2=CC3=C(C=C2)N=C(N3)C4=CC=C(C=C4)OC
InChI: InChI=1S/C19H18N4O2/c1-11-9-17(24)22-23-18(11)13-5-8-15-16(10-13)21-19(20-15)12-3-6-14(25-2)7-4-12/h3-8,10-11H,9H2,1-2H3,(H,20,21)(H,22,24)
InChIKey: GLBJJMFZWDBELO-UHFFFAOYSA-N
Index of Refraction: 1.692
Molar Refractivity: 94 cm3
Molar Volume: 245.2 cm3
Surface Tension: 51.7 dyne/cm
Density: 1.36 g/cm3
Classification Code: Drug / Therapeutic Agent
BRN of (+)-Pimobendan (CAS NO. 118428-38-9): 4207330

Toxicity Data With Reference

1.    

ivn-rat LD50:75 mg/kg

     OYYAA2    Oyo Yakuri. Pharmacometrics. 43 (1992),561.

Safety Profile

A poison by intravenous route. When heated to decomposition it emits toxic vapors of NOx.

Specification

  (+)-Pimobendan with cas registry number of 118428-38-9 is also known as (+)-4,5-Dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-3(2H)-pyridazinone ; (+)-UD-CG 115BS ; d-Pimobendan ; 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-, (+)- .