Units xxii

The Ended States Pharmacopoeia XXI (ESP XXII-NF XVII), The United States Pharmacopeia Convention, Inc., Rockville, Md., 1990. 

United States Pharmacopeia XXII-NationalFormulary XTTI, 1990. 

United States Pharmacopeia XXII, United States Pharmacopeial Convention, Inc., RockviUe, Md., 1989. 

Since the FeCp(C6H6)+ unit is robust towards oxidation even in concentrated sulfuric acid, oxidation of alkyl substituents upon boiling in aqueous KMn04 solution can be achieved and leads to carboxylic substituents. The mesitylene complex can be oxidized to the mono-, di-, or tri-carboxylic add depending upon the reaction conditions. In the latter case, the decomplexed trimesic acid is obtained [106, 107] Scheme XXII ... 

USP XXII < 1225 > (1990), United States Pharmacopoeia, Validation of compendial methods... 

Non-SI (unacceptable and obsolete) units, l xxiv-xxv 2-26 xxii-xxiii Nonsilicate crystals, glass-ceramics based on, 12 641-642... 

Unit standards, 15 751 Unit symbols, l xvii—xxiv 2—26 xv—xxii rules for writing, l xviii-xix 2-26 xvi-xvii UNITY, 6 11... 

Vander Heyden, Y., Luypaert, K., Hartmann, C., Massart, D. L., Hoogmartens, J., and De Beer, J. (1995). Ruggedness tests on the high-performance liquid chromatography assay of the United States Pharmacopeia XXII for tetracycline hydrochloride. A comparison of experimental designs and statistical interpretations. Anal. Chim. Acta 312, 245-262. 

Physical tests and determinations on aerosols. In United States Pharmacopoeia XXII, NF XVII, Ninth Supplement, pp. 3584-3591,1993. 

The isolation of the four products listed in Table II column 1 shows that all the residues in the stable nucleus of degraded arabic acid have the pyranose form and that all the units are joined by either 1,3 or 1,6 linkages. The possible structures which could accommodate these experimental facts were indicated and later work limited the number of possibilities still further by the isolation of hexamethyI-(6-D-glucuronosyl-D-galactose) (XXII) from methylated degraded arabic acid by controlled hydrolysis. One possible structure advanced for degraded arabic acid is shown in XXIII. 

The United States Pharmacopoeia (USP XXII) and National Formulary (NFXVII), United States Pharmacopoeial Convention, Inc., Rockville, MD, 1990, p. 357. 

Coating purposes and components. According to the United States Pharmacopeia (XXII), three classes of coating are employed commonly... 

The United States Pharmaceopeia, XXII ed. Rockville, MD United States Pharmacopeial Convention, 1990. 

Alkoxylation. The reaction of alcohols with ethylene oxide gives polymeric products in which many units of the ethoxy group are incorporated (Reaction XXII). The reaction can be controlled... 

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