SUMMARY OF ANALYSIS ============+==========+=======+=====+=====+========+========+======== | |Gm. in |Price|Mois-|Alkalin.|Theo- |Theo- |Physical |1-Ounce|per |ture,|as NaOH |bromin. |bromin. |Appearance|Bottle |Ounce|Per |on Dry |in Dry |in Orig. | [AQ] | | |Cent.|Powder |Powder |Specimen | | | | |[AR] Per|[AR] Per|[AR] Per | | | | |Cent. |Cent. |Cent. ------------+----------+-------+-----+-----+--------+--------+-------- Diuretin | 3 | 28.5 |$1.75| 0.01| 10.44 | 48.61 | 48.61 |Pure White| | | | | | | | | | | | | Theo. | 3 | | | | | | Sod. Sal. |Pure White| 27.5 | 0.35| 1.89| 9.95 | 46.11 | 45.24 M. C. W | | | | | | | | | | | | | | Theo. | 1 | | | | | | Sod. Sal. |Pure White| 29.0 | 0.35| 0.48| 10.38 | 47.87 | 47.58 Merck | | | | | | | | | | | | | | Theo. | 3 | Sod. Sal. |Pure White| 29.1 | 0.35| 2.46| 10.30 | 47.57 | 46.39 P. W. R. Co.| | | | | | | | | | | | | | Theo. | 3 | | | | | | Sod. Sal. | Pink | 28.6 | 0.35| 2.27| 9.92 | 49.05 | 47.92 Roche | | | | | | | | | Theo. | 1 | | | | | | Sod. Sal. |Pure White| 26.8 | 0.45| 0.39| 9.97 | 46.82 | 46.63 Squibb | | | | | | | ------------+----------+-------+-----+-----+--------+--------+-------- [AQ] In this column, 1, 2 and 3 denote the following: 1. Quite crystalline, under microscope. 2. Fairly crystalline, under microscope. 3. Not crystalline, under microscope. [AR] Average of determinations. While the results show some variation in the moisture content and also in the actual theobromin content of the dried specimens, the variation is unimportant. The products in their original state (undried), as compared in relation to the theobromin content (the highest percentage of theobromin being 48.61, the lowest 45.24), reveal a variation of only about 3 per cent.--a variation which is negligible in the case of drugs such as theobromin.