.safetyRow { clear: both; } .safetyLeft { width: 210px; float: left; } CAS Number 720710-30-5 Empirical Formula (Hill Notation) 13C6C9H11I4NO4 Molecular Weight 782.83  EC Number 200-659-6 Properties: Related Categories Additional Standards, Analytical Standards, Analytical/Chromatography, Certified Reference Materials (CRMs), Certified Reference Materials from Cerilliant, Thyroid Hormones More... grade   certified reference material InChI Key   XUIIKFGFIJCVMT-PDHVKVOFSA-N feature   (Snap-N-Spike®) packaging   ampule of 1 mL concentration   100 μg/mL in methanol with 0.1N NH3 format   single component solution storage temp.   −20°C Description: General description Thyroxine or T4 is a thyroid hormone responsible for regulation of protein, fat, and carbohydrate metabolism as well as the proper development and differentiation of all cells of the human body. This internal standard and Certified Spiking Solution® is suitable for quantitation of free and total T4 serum levels by LC-MS/MS for determination of hyper- or hypothyroidism and monitoring treatment with synthetic thyroid hormones. Legal Information CERTIFIED SPIKING SOLUTION is a registered trademark of Cerilliant Corporation Snap-N-Spike is a registered trademark of Cerilliant Corporation Safety: Symbol    GHS02, GHS06, GHS08 Signal word  Danger Hazard statements  H225-H301 + H311 + H331-H370 Precautionary statements  P210-P260-P280-P301 + P310-P311 RIDADR  UN1230 - class 3 - PG 2 - Methanol, solution WGK Germany  1 Flash Point(F)  48.2 °F Flash Point(C)  9 °C