548-68-5 Usage
Originator
Trocinate,Poythress,US,1950
Manufacturing Process
The following procedure is described in US Patent 2,510,773: To an ice-cold
solution of 13.3 grams of 2-diethylaminoethanethiol in 100 cc of dry benzene
is slowly added a solution of 23.05 grams of diphenylacetyl chloride in 200 cc
of dry benzene. The mixture is stirred 2 hours, then heated to dissolve the
fine white solid that is formed. Upon cooling 31.3 grams of 2-
diethylaminoethyl diphenylthiolacetate hydrochloride precipitates. It
recrystallizes from a mixture of benzene and petroleum ether (BP 60° to
70°C) as rosettes of tiny needles and melts at 129° to 130°C. From a mixture
of absolute ethanol and ethyl acetate it recrystallizes as large, almost
transparent prisms.
Brand name
Tifenamil is INN.
Therapeutic Function
Spasmolytic
Check Digit Verification of cas no
The CAS Registry Mumber 548-68-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 548-68:
(5*5)+(4*4)+(3*8)+(2*6)+(1*8)=85
85 % 10 = 5
So 548-68-5 is a valid CAS Registry Number.
