Detail of "122-31-6"

CAS Number:
122-31-6
Name:
1,1,3,3-Tetraethoxypropane
Molecular Structure:
Formula:
C₁₁H₂₄O₄
Molecular Weight:
220.35
Synonyms:
Malonaldehyde,bis(diethyl acetal) (6CI,7CI,8CI);1,1,3,3-Tetrakis(ethoxy)propane;Malonaldehyde tetraethyl acetal;Malonaldehyde tetraethyl diacetal;NSC 17068;Tetraethyl malondialdehyde acetal;Malonaldehyde bis(diethyl acetal);
EINECS:
204-533-1
Density:
0.932 g/cm³
Melting Point:
-90 °C
Boiling Point:
220 °C at 760 mmHg
Flash Point:
42.2 °C
Solubility:
insoluble in water
Appearance:
clear colourless to yellow liquid
Hazard Symbols:
Xn
Risk Codes:
22
Safety:
36/37/39-26 Details

Symmetric dyes - derivatives of naphtho[1,8-bc]thiophene: Symmetric dyes - derivatives of naphtho[1,8-bc]thiophene. Vasilenko, N. P.In this study， 108433-17-6 and 108433-16-5 are also used.; Mikhailenko, F. A.; Maidannik, A. G. (Inst. Org. Khim., Kiev, USSR). Khim. Geterotsikl. Soedin., (3), 418-19 (Russian) 1987. CODEN: KGSSAQ. ISSN: 0453-8234. DOCUMENT TYPE: Journal CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Sym. cyanine dyes (I; n = 0, 1, 2; X = p-MeC6H4SO3, ClO4) were obtained by decompn. of a naphthothiophene dye (II) [66134-14-3] with p-MeC6H4SO3H to give a methylnaphthothiolium salt (III; R = Me; X = p-MeC6H4SO3) [108433-16-5], which was then condensed with a methylthionaphthothiolium salt (III; R = SMe; X = MeOSO3) [108433-17-6] or treated with orthoformic ester or (EtO)2CHCH2CH(OEt)2 [122-31-6]. .

1-(2-pyrimidyl)piperazine derivatives: 1-(2-pyrimidyl)piperazine derivatives. Yamaji, Mitsuharu (Koei Chemical Industry Co.Several substances are used for example 102-52-3 and 122-31-6 which are their cas registry numbers., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 61260068 A2 18 Nov 1986 Showa, 4 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C07D239-42. ICS: C07D403-04. ICI: C07D403-04, C07D239-00, C07D241-00. APPLICATION: JP 85-101876 13 May 1985. DOCUMENT TYPE: Patent CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) The title derivs. (I; R = Q; R1, R2 = H, lower alkyl; R3 = H), useful as intermediates for drugs, were prepd. by treating I (R = H2NC:NH; R3 = CHO) mineral acid salts and R4O(R5O)CHCH2CH(OR6)OR7 (II; R4, R5, R6, R7 = lower alkyl) with mineral acids followed by hydrolysis by alkali. Thus, to a mixt. of I (R = H2NC:NH, R1 = R2 = H, R3 = CHO).1/2H2SO4 and 36% HCl, II (R4-7 = Me) was added dropwise at 20-25° over 2 h. The resulting mixt. was allowed to react at 20-25° for 4 h, left overnight, and treated with benzene, 48% NaOH, and H2O at 70° for 1 h to give 70% I (R = Q, R1 = R2 = R3 = H). .