2019年9月27日 · Levothyroxine Sodium Tablets contain NLT 95.0% and NMT 105.0% of the labeled amount of levothyroxine sodium (C15H10I4NNaO4). • A. The retention time of the major peak of the Sample solution corresponds to the levothyroxine peak of the Standard solution, as obtained in the Assay.

Standard solution—Prepare a stock solution of USP Levothyrox-ine RS in methanol having a known concentration of about 0.1 mg per mL. Dilute this stock solution with Medium to obtain a solution having a concentration similar to that expected in the Test solution. Test solution—[NOTE—Prior to use, check the filters for absorp- tive loss of drug.]

Standard stock solution: Transfer about 100 mg of sodium in the Sample solution (µg/mL) USP Levothyroxine RS to a 100-mL volumetric flask. M r1 = molecular weight of liothyronine sodium, Add 80 mL of alcohol and 1 mL of 1 N hydrochloric 672.96 acid, sonicate for 2 min, dilute with alcohol to vol-M r2 = molecular weight of liothyronine, 650.98 ...

Levothyroxine Sodium Tablets contain NLT 95.0% and NMT 105.0% of the labeled amount of levothyroxine sodium (C 15 H 10 I 4 NNaO 4). United States Pharmacopeia (2022). USP Monographs, Levothyroxine Sodium Tablets. USP-NF. …

Levothyroxine Sodium Tablets » Levothyroxine Sodium Tablets contain not less than 90.0 percent and not more than 110.0 percent of the labeled amount of levothyroxine sodium (C 15 H 10 I 4 NNaO 4 ). Packaging and storage — Preserve in tight, light-resistant containers.

Levothyroxine sodium tablets, USP contains synthetic crystalline L-3,3’,5,5’-tetraiodothyronine sodium salt [levothyroxine (T4) sodium]. Synthetic T 4 is identical to that produced in the...

2025年1月8日 · Levothyroxine sodium tablets, USP is L-thyroxine (T4) and contains synthetic crystalline L-3,3’,5,5’-tetraiodothyronine sodium salt. Synthetic T4 is chemically identical to that produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C 15H 10I 4N NaO 4• H 2O, molecular weight of 798.86 (anhydrous), and ...

Levothyroxine sodium tablets, USP contains synthetic crystalline L-3,3’,5,5’-tetraiodothyronine sodium salt [levothyroxine (T ) sodium]. Synthetic T is identical to that produced in the human thyroid gland.

Levothyroxine sodium is used for the following indications: Hypothyroidism – As replacement or supplemental therapy in congenital or acquired hypothyroidism of any etiology, except transient...

» Levothyroxine Sodium is the sodium salt of the levo isomer of thyroxine, an active physiological principle obtained from the thyroid gland of domesticated animals used for food by man or prepared synthetically. It contains not less than 97.0 percent and not more than 103.0 percent of C 15 H 10 I 4 NNaO 4, calculated on the anhydrous basis.