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LC/MS/MS Analysis of Vitamins B1 and B6 on Ascentis® Express OH5
Separation of Pyridoxine Hydrochloride (B6), analytical standard; Thiamine Hydrochloride (B1), analytical standard
Rapid, Sensitive, and Quantitative LC/MS/MS Determination of Digitoxin and Digoxin in Plasma
Immunoassay-based methods for digitoxin or digoxin exist, but are time consuming, labor intensive, and not selective due to similarities in their chemical structures.
Analysis of Alkylphenols and Alkylphenol Ethoxylates Using new 13C-Labeled and Deuterated Internal Standards According to ISO 18857-2
Analysis of Alkylphenols and Alkylphenol Ethoxylates Using new 13C-Labeled and Deuterated Internal Standards According to ISO 18857-2
Analysis of Active Cannabis Compounds in Edible Food Products: Gummy Bears and Brownies
Potency testing in marijuana-infused edibles is an important problem that analytical labs are facing due to the complexity of the involved matrices. Concentration of active ingredients in these edibles can range from a few parts per million to 3.5 parts...
HPLC Analysis of Levothyroxine and Liothyronine on Ascentis® Express ES-Cyano
HPLC Analysis of Levothyroxine and Liothyronine on Ascentis® Express ES-Cyano
HPLC Analysis of Paraben Preservatives on Discovery® C18
Separation of Methyl Paraben, analytical standard; Ethylparaben, United States Pharmacopeia (USP) Reference Standard; Propylparaben, United States Pharmacopeia (USP) Reference Standard; Butylparaben, United States Pharmacopeia (USP) Reference Standard
LC/MS Analysis of L-Methionine Sulfoximine, Sulfone and Sulfoxide on Ascentis® Express HILIC
Separation of L-Methionine sulfone; L-Methionine sulfoximine; L-Methionine sulfoxide
An Alternative to the USP and EP Methods for the Analysis of Riboflavin (Vitamin B₂) and Impurities
An MS-compatible alternative to the USP and EP methods, with improved specificity and reduced analysis time.
LC/MS Analysis of Lactic Acid Enantiomers in Urine on Astec® CHIROBIOTIC® R
Separation of L-(+)-Lactic acid, analytical standard; D-(−)-Lactic acid, 93-107%
UHPLC (Isocratic) Analysis of 14 Cannabinoids on Ascentis® Express C18
Tetrahydrocannabinolic acid A solution, 1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material; Cannabichromenic Acid (CBCA) solution, 1.0 mg/mL in acetonitrile, certified reference material, ampule of 1 mL
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
HPLC Analysis of Carotene Compounds on Ascentis® RP-Amide
HPLC Analysis of Benzoic Acid and Related Compounds on Ascentis® RP-Amide
Separation of 4-Hydroxybenzoic acid; Acetylsalicylic acid; Benzoic acid; Salicylic acid; Ethyl 4-hydroxybenzoate
HPLC Analysis of Aflatoxins B1, B2, G1 and G2 in Corn on Ascentis® Express C18 after SPE using Supel™ Tox AflaZea and Fluorescence Detection
HPLC Analysis of Aflatoxins B1, B2, G1 and G2 in Corn on Ascentis<sup>®</sup> Express C18 after SPE using Supel<sup>™</sup> Tox AflaZea and Fluorescence Detection
Online Solid Phase Extraction and LC-MS Analysis of Thyroid Hormones in Human Serum
Thyroid hormones play critical roles in the regulation of biological processes, such as growth, metabolism, protein synthesis, and brain development. For a clinical laboratory, fast and reliable measurements of total hormone levels are important for the diagnosis and monitoring of...
HPLC Analysis of Fat Soluble Vitamins by Normal Phase Chromatography on Ascentis® Si
Separation of (±)-α-Tocopherol, analytical standard; Menadione (K3), analytical standard; (+)-γ-Tocopherol, analytical standard; Cholecalciferol (D3), analytical standard
HPLC Analysis of Vitamin D2 and D3 on Ascentis® Express C18
This application demonstrates the suitability of the Ascentis Express C18, 5 μm, for the routine analysis of the fat-soluble vitamins D2 and D3 . Structures along with the optimized chromatogram obtained on the Ascentis Express C18, 5 μm are presented.
HPLC Analysis of Furans on Ascentis® Express Phenyl-Hexyl as listed in ASTM method D5837-99
Separation of 5-Hydroxymethyl-2-furaldehyde; Furfuryl alcohol; Furfural; 2-Furyl methyl ketone; 5-Methyl-2-furaldehyde
LC/MS Analysis of Phospholipids in Milk on Ascentis® Express HILIC after SPE using Supelclean™ Si, Shotgun HPLC Analysis
(soybean), ≥97%; L-α-Phosphatidylethanolamine from egg yolk, Type III, ≥97% (TLC), lyophilized powder; L-α-Phosphatidylcholine, from egg yolk, Type XVI-E, ≥99% (TLC), lyophilized powder; Sphingomyelin, from chicken egg yolk, ≥95%
Using UHPLC/MS (TOF) for Detection of Drugs and Metabolites in Urine Following Optimized Enzymatic Hydrolysis Conditions
To optimize hydrolysis using β-glucuronidase, factors such as incubation time, temperature, hydrolysis pH, enzyme source, and enzyme concentration must be evaluated for each glucuronide metabolite to be analyzed.
HPLC Analysis of Vitamins B1 B6 B12
HPLC Analysis of Vitamins B1, B6 and B12 using Ascentis® Express RP-Amide
Quantifying Picogram Concentrations of Aflatoxin M1 in Liquid Milk using SPE Cleanup and LC/MS Analysis
Fast method for the cleanup, analysis, and quantification of aflatoxin M1 in milk samples to EU regulatory standards (0.025 μg/kg).
Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms Using Supel™ QuE and Ascentis® Express
Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms Using Supel<sup>™</sup> QuE and Ascentis<sup>®</sup> Express
HPLC Analysis of Monosaccharides Ribose, Xylitol, and Mannose on Chromolith® NH2
Separation of Ribose, United States Pharmacopeia (USP) Reference Standard; Xylitol, analytical standard; Mannose, United States Pharmacopeia (USP) Reference Standard
Fast Extraction and Low Level Detection of Chloramphenicol in Shrimp
A highly selective and sensitive analytical method was developed for chloramphenicol using a QuEChERS type sample preparation approach and LC-MS/MS detection.
Analysis of Aflatoxin B1, B2, G1, and G2 in Corn Meal, Wheat Meal, and Raw Peanut Paste Matrices
Supel™ Tox AflaZea SPE cartridges provide exceptional cleanup of corn meal, wheat meal, and raw peanut paste, yielding high analyte recoveries and low %RSD for aflatoxin analysis.
Determination of Triclosan in Environmental Waters
Triclosan is a chemical that has been used as an antibacterial agent in many soaps and a variety of other consumer and personal care products for many years. Because of its widespread use and high production volume (exceeding 1 million...
HPLC Analysis of Warfarin Anticoagulant on Ascentis C18
HPLC Analysis of Warfarin™ Anticoagulant on Ascentis® C18
Determination of Hydrocortisone from Topical Cream Using Discovery DSC-Si SPE and Reversed-Phase HPLC-UV
Using the method described in this report, an average absolute recovery and RSD value of 99.86 ± 6.99% (n=6) was observed, to determine an average of 1.02% hydrocortisone in topical cream.

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