Richter

Richter L T, Petralli-Mallow T P and Stephenson J C 1998 Vibrationally resolved sum-frequency generation with broad-bandwidth infrared pulses Opt Lett. 23 1594-6... 

Sartori N, Richter K and Dobochet J 1993 Vitrification depth can be increased more than 10-foid by high pressure freezing J. Microsc. 172 55-61... 

Muller A, Richter W and Kador L 1995 Pressure effects on single molecules of terrylene in p-terphenyl Chem. Phys. Lett. 241 547-54... 

Toney M F, Floward J N, Richter J, Borges G L, Gordon J G, Meiroy O R, Wiesier D G, Yee D and Sorensen L B 1995 Distribution of water moiecuies at Ag(111 )/eiectroiyte interface studied with surface x-ray scattering Surf. Sc/. 335 326-32... 

Richter and Ilberg, Kurze Anleitung zur Orientierung in Beilsteina Handbuch der organischen Chemie, 23 pp. (1936) ( Julius Springer). 

Richter-Anschutz, Chemie der Kohlenstoffverbindungen, Twelfth Edition, 3 Volumes in 4, 1928-1935 (Akad. Verlag, Leipzig). An English translation under the title Richter s Organic Chemistry is available (Elsevier Publishing Co., 1934-1947). 

Ethyl bis-(2,4-dinitrophenyl) acetate (indicator) the stock solution is prepared by saturating a solution containing equal volumes of alcohol and acetone with the indicator pH range colorless 7.4-9.1 deep blue. This compound is available commercially. The preparation of this compound is described by Fehnel and Amstutz, Ind. Eng. Chem., Anal. Ed. 16 53 (1944), and by von Richter, Ber. 21 2470 (1888), who recommended it for the titration of orange- and red-colored solutions or dark oils in which the endpoint of phenol-phthalein is not easily visible. The indicator is an orange solid which after crystallization from benzene gives pale yellow crystals melting at 150-153.5°C, uncorrected. 

Sandig A.M., Richter U., Sandig R. (1989) The regularity of boundary value problem for the Lame equations in a polygonal domain. Rostock. Math. Kolloq. 36, 21-50. 

H. Richter, Proceedings of the 18th World Gas Conference, International Gas Union, Berlin, Germany, 1991, pp. 1—9. 

R. Richter and H. Ulrich, in S. Patai, ed.. The Chemistry of Cyanates and their Thio Deripatires John Wiley Sons, Inc., New York, 1977, p. 619. 

H. Ulrich and R. Richter, ia W. Forest, ed., Newer Methods of Preparative Organic Chemistry-Vl. Academic Press, Inc., New York, 1970, p. 267. 

D. Demus and L. Richter, Textures of Eiquid Cystals, Vedag-Chemie, Berlin, 1978. 

French firms, Rhc ne-Poulenc and, to a lesser extent, Roussel-Uclaf. Smaller amounts are produced in Japan by Nippon Petrochemical, in Hungary by Medimpex-Richter, and by minor producers in several other countries. Barber manufacturers, particularly Merck (U.S.) and Glaxo (U.K.), have exited the market. Although estimates vary, it appears that ca 10,000 kg/yr of vitamin is produced (1). 

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