Detail of "7648-01-3"

CAS Number:
7648-01-3
Name:
3-Ethylrhodanine
Molecular Structure:
Formula:
C₅H₇NOS₂
Molecular Weight:
161.25
Synonyms:
3-Ethyl-2-thioxo-1,3-thiazolidin-4-one
EINECS:
231-603-9
Safety:
Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. When heated to decomposition it emits very toxic fumes of NO_x and SO_x. Details

3-Ethyl-2-thioxothiazolidin-4-one

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Supplier:Shanghai Pharmarketech Limited [ China (Mainland)]

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Thiazolocyanines: Thiazolocyanines. XIX. Mono- and diquaternary N-pyridylthiazolium salts and zeromethinemerocyanines based on them. Sych, E. D.In this study，27825-90-7 is also used.; Moreiko, O. V.; Dyadyusha, G. G. (Inst. Org. Khim., Kiev, USSR). Khim. Geterotsikl. Soedin., (3), 341-5 (Russian) 1977. CODEN: KGSSAQ. DOCUMENT TYPE: Journal CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 The title merocyanines, e.g., I (R = Et, Bu; X = O, S; 3- or 4-pyridyl) and their quaternized derivs., were prepd. by condensation of the 2-(alkylthio)-4,5-dimethyl-3-pyridylthiazolium salts or analogous diquaternary derivs. with ketomethylene compds., such as N-ethylrhodanine [7648-01-3]. The absorption spectrum of I.MeI (R = Et, X = S, 4-pyridyl) [63317-34-0] showed a max. at 415 nm independent of solvent polarity and a longer wavelength max. which varied from 486 nm in H2O to 524 nm in EtOH-C6H6, reflecting the behavior of pyridinium charge-transfer complexes. .

Studies on polymerocyanines: Studies on polymerocyanines. VI. Phenomenon of the separation of absorption bands in dimerocyanine dyes. Lyubich, M. S.; Borovenskii, A. M. (Vses. Nauchno-Issled. Proektn. Inst. Khim.-Fotogr. Prom., Moscow, USSR). Zh. Org. Khim., 13(8), 1769-72 (Russian) 1977. CODEN: ZORKAE. DOCUMENT TYPE: Journal CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 22 The visible and UV spectra of bismerocyanines I [X = S, CMe2, CH:CH; R = H, Ph, or RR = benzo; R1 = Et, Bu; R2 = Et, Bu, (CH2)5CO2CHMe2; n = 0,2] indicate interaction of the chromophores with an angle between them of .apprx.180.degree.. 64656-55-9 is also in the experiment. The extent of interaction is given by the spacing (in nm) between the 2 absorption peaks of I less the spacing between the absorption max. of the 2 component merocyanines, and is greater when n = 0 than when n = 2. 5-(5-Benzylidene-3-ethyl-4-oxo-2-thiazolidinylidene)-3-ethyl-2-thioxo-4-t hiazolidinone [64656-52-6] was prepd. as one of the component merocyanines by reaction of 5-benzylidene-3-ethyl-4,5-dihydro-2-(methylthio)-4-oxothiazolium o-nitrobenzenesulfonate [64656-58-2] with 3-ethylrhodanine [7648-01-3] in Ac2O in the presence of Et3N. .