Betahistine
Structural Formula Vector Image
Title: Betahistine
CAS Registry Number: 5638-76-6
CAS Name: N-Methyl-2-pyridineethanamine
Additional Names: 2-[2-(methylamino)ethyl]pyridine; [2-(2-pyridyl)ethyl]methylamine
Molecular Formula: C8H12N2
Molecular Weight: 136.19
Percent Composition: C 70.55%, H 8.88%, N 20.57%
Literature References: Prepn: Löffler, Ber. 37, 161 (1904); Walter et al., J. Am. Chem. Soc. 63, 2771 (1941).
Properties: Liquid. bp30 113-114°. Soluble in water, alcohol, ether, chloroform.
Boiling point: bp30 113-114°
 
Derivative Type: Dihydrochloride
CAS Registry Number: 5579-84-0
Trademarks: Betaserc (Duphar); Serc (Unimed); Vasomotal (Philips-Duphar)
Molecular Formula: C8H12N2.2HCl
Molecular Weight: 209.12
Percent Composition: C 45.95%, H 6.75%, N 13.40%, Cl 33.91%
Properties: Crystals from alc, mp 148-149°.
Melting point: mp 148-149°
 
Derivative Type: Maleate
Trademarks: Suzutolon (Tatsumi)
Molecular Formula: C8H12N2.C4H4O4
Molecular Weight: 252.27
Percent Composition: C 57.13%, H 6.39%, N 11.10%, O 25.37%
 
Derivative Type: Mesylate
Trademarks: Medan (Kowa); Menitazine (Towa Yakuhin); Merislon (Eisai); Remark (Nippon Zoki); Tenyl (Nippon Kayaku)
Molecular Formula: C8H12N2.CH3SO3H
Molecular Weight: 232.30
Percent Composition: C 46.53%, H 6.94%, N 12.06%, S 13.80%, O 20.66%
 
Derivative Type: Dimesylate
Trademarks: Aequamen (Promonta); Melopat (Medopharm); Ribrain (Yamanouchi)
Molecular Formula: C8H12N2.(CH3SO3H)2
Molecular Weight: 328.41
Percent Composition: C 36.57%, H 6.14%, N 8.53%, S 19.53%, O 29.23%
 
Therap-Cat: Vasodilator.
Keywords: Vasodilator (Peripheral).

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