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144319-70-0

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144319-70-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144319-70-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,1 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 144319-70:
(8*1)+(7*4)+(6*4)+(5*3)+(4*1)+(3*9)+(2*7)+(1*0)=120
120 % 10 = 0
So 144319-70-0 is a valid CAS Registry Number.

144319-70-0Relevant articles and documents

Novel [2-(4-piperidinyl)ethyl](thio)ureas: Synthesis and antiacetylcholinesterase activity

Vidaluc,Calmel,Bigg,Carilla,Stenger,Chopin,Briley

, p. 689 - 695 (2007/10/02)

A series of 1-ar(o)yl-3-[2-(1-benzyl-4-piperidinyl)ethyl](thio)urea derivatives was synthesized and evaluated for antiacetylcholinesterase activity. Most aroyl(thio)urea derivatives showed potent inhibitory activity in the sub-micromolar range. A comparable potency was obtained with the aryl(thio)urea analogues by replacing the phenyl with a 2-pyridyl group. The substituted guanidine variations proved to be almost inactive whereas the nitroethylene analogues appeared to be quite efficient. These results were interpreted in terms of the preferential cis-trans conformation of the aroyl(thio)urea and 2-pyridyl(thio)urea moieties involving the existence of hydrogen bonding. In vivo experiments showed that compound 7m had maximal antiamnestic activity at 0.03 mg/kg with a therapeutic ratio greater than 1000, while cholinergic side effects were only seen at doses 100-fold the maximally effective antiamnestic dose. Compound 7m represents a potentially interesting antidementia agent.

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