143-81-7 Usage
Originator
Butisol sodium,Wallace Labs,USA
Uses
Sedative-hypnotic.
Manufacturing Process
5-sec-Butyl-5-ethylbarbituric acid was prepared from diethyl ester of malonic
acid in 3 steps. At the above malonic ester was reacted with C2H5Br and
sodium ethylate producing the diethyl ester of ethylmalonic acid, which after a
reaction with sodium ethylate and 2-butylbromide gave the ethyl-(2-butyl)-
malonic acid diethyl ester. The last one produced the 5-sec-butyl-5-ethylbarbituric
acid after a reaction with urea and sodium ethylate.
23 g sodium (1 mol) was dissolved in 300 ml alcohol. To this solution was
added a solution of 5-sec-butyl-5-ethyl-barbituric acid (1 mol) in 800 ml
alcohol. To a mixture was added 1000 ml benzene, which precipitated the
sodium salt of the barbituric acid (butabarbital sodium). The product was
filtered and dried.
Therapeutic Function
Hypnotic
Check Digit Verification of cas no
The CAS Registry Mumber 143-81-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 143-81:
(5*1)+(4*4)+(3*3)+(2*8)+(1*1)=47
47 % 10 = 7
So 143-81-7 is a valid CAS Registry Number.
InChI:InChI=1/C10H16N2O3.Na/c1-4-6(3)10(5-2)7(13)11-9(15)12-8(10)14;/h6H,4-5H2,1-3H3,(H2,11,12,13,14,15);/q;+1