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A modification of the U. S. P. XII assay for desiccated thyroid††This research was done with the assistance of a grant from the Board of Trustees of the United States Pharmacopmial Convention.

✍ Scribed by Waters, Kenneth L. ;Beal, George D.

Publisher
Elsevier
Year
1945
Weight
361 KB
Volume
34
Category
Article
ISSN
0095-9553

No coin nor oath required. For personal study only.

✦ Synopsis

When the test described above was applied to these adulterated samples the intensity of the blue color was roughly proportional to the concentration of the added iodide. Sample I gave a very intense dark blue color whereas Sample I V gave a light blue, but still characteristic, color.

REFERENCES

No blue color was obtained when the test was aDolied to Seven samDles of U. S . p. Thvoid Tablets inorganic iodide has been presented and shown to be applicable to u. s. p. thyroid powder and (1) "The British Pharmacopcria." Constable and Co , Ltd., anh to eight samplesbf U. S. P. Thyroid Powder. A L0&~;t.,~,9"3pP,'~4and balway, A , Pharm desiccated hog thyroid that analyzed 0.67% iodine phormacoz s fi77(1932) also failed to show the presence of inorganic iodine. <?, Harr;n&on, C R and Randall. 5 S I t * d . 5, 629 A blue color was produced when the testwas applied to a mixture of diiodotyrosine and casein which had been standardized at 0.20/, iodine by Johnson and Nelson (9) during the course of their work. ( l ~& ~J ~a r r i n g t o n ,

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