| CAS Number | 59-43-8 |
|---|---|
| Molecular Formula | C12H17ClN4OS |
| Molecular Weight | 300.810 |
| InChI Key | MYVIATVLJGTBFV-UHFFFAOYSA-M |
| LogP | -1.42 |
| Synonyms |
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Applications:
HPLC LC MS Method for Analysis of Thiamine on Chromni Column
June 23, 2026
HPLC Method for Analysis of Vitamin B1 (Thiamine) on Chromni Column by SIELC Technologies
High Performance Liquid Chromatography (HPLC) Method for Analysis of Vitamin B1 (Thiamine).
Thiamine, also known as vitamin B1, is an essential nutrient with the chemical formula C12H17ClN4OS. It plays a crucial role in energy metabolism and the proper functioning of the nervous system. It helps the body convert carbohydrates into energy and is vital for the growth, development, and function of cells. You can find detailed UV spectra of Vitamin B1 (Thiamine) and information about its various lambda maxima by visiting the following link.
Vitamin B1 (Thiamine) can be retained and analyzed using the Chromni stationary phase column. The analysis utilizes an gradient method with a simple mobile phase consisting of water and acetonitrile (MeCN) with a ammonium formate buffer. Detection is performed using LC MS.
Condition
| Column | Chromni, 2.1 x 150 mm, 3 µm, 100 A, surface coated |
| Mobile Phase | Gradient MeCN/H2O – 70/30 – 40/60%, 10 min |
| Buffer | Ammonium formate pH 3.0 – 20 mM |
| Flow Rate | 0.2 ml/min |
| Detection | ESI-SIM: [M+2H]2+ 265.1 |
| Limit Of Detection* | 4 ppb |
Description
| Class of Compounds | Vitamin |
| Analyzing Compounds | Vitamin B1 (Thiamine) |
Application Column
Chromni
Column Diameter: 2.1 mm
Column Length: 150 mm
Particle Size: 3 µm
Pore Size: 100 A
Column options: surface coated
HPLC Method for Separation of 8 Water-Soluble Vitamins on Chromni Column
September 17, 2025
HPLC Method for Separation of 8 Water-Soluble Vitamins on Chromni by SIELC Technologies
High Performance Liquid Chromatography (HPLC) Method for separation of Vitamin B2 (Riboflavin), Nicotinic Acid (Vitamin B3), Vitamin B6 (Pyridoxine), Folic Acid, Cyanocobalamin, Thiamine diphosphate (Thiamine pyrophosphate), Vitamin B1 (Thiamine), Pantothenic Acid (Vitamin B5), Biotin
Riboflavin (B2), Nicotinic Acid (B3), Folic Acid (B9), Cyanocobalamin (B12), Thiamine Pyrophosphate (coenzyme of B1), Thiamine (B1), Pantothenic Acid (B5), Biotin (B7) are water soluble vitamins with a key function of energy metabolism. These coenzymes are responsible for converting food into usable energy.
Pantothenic Acid, also known as vitamin B5, is an essential nutrient with the chemical formula C19H17NO5. It plays a crucial role in energy and coenzyme A production. That energy and coenzyme are used for synthesis and degradation of proteins, carbohydrates, and fats. You can find detailed UV spectra of Pantothenic Acid (Vitamin B5) and information about its various lambda maxima by visiting the following link.
Biotin (Vitamin B7) is a water-soluble vitamin with the chemical formula C10H16N2O3S. It helps the body breakdown key nutrients in order for it to absorb and utilize them. A lack of biotin can lead to hair loss, rash, and brittle nails. A healthy diet including eggs, milk, and bananas can supply the body with a healthy dose of biotin. You can find detailed UV spectra of Biotin and information about its various lambda maxima by visiting the following link.
Nicotinic acid, also known as niacin and vitamin B3, is a water-soluble B vitamin with C₆H₅NO₂ molecular formula. It is an essential nutrient that is crucial for energy production. Nicotinic acid is commonly used as a dietary supplement to treat vitamin B3 deficiency, and it’s also prescribed in higher doses to help lower cholesterol levels. It works by dilating blood vessels, which can lead to a flushing sensation, hence it is sometimes referred to as “flushing niacin.” You can find detailed UV spectra of Niacin and information about its various lambda maxima by visiting the following link.
Riboflavin, also known as Vitamin B2, is an essential vitamin with the chemical formula C17H20N4O6. It is crucial in the formation of flavin mononucleotide and flavin adenine dinucleotide. Those coenzyme are involved in a large variety of tasks, including but not limited to energy metabolism, cellular respiration, antibody production, and metabolism of niacin and folate. It is also used as yellow food coloring. You can find detailed UV spectra of Riboflavin and information about its various lambda maxima by visiting the following link.
Folic Acid, also known as vitamin B9, folic acid is crucial for many functions in the body, including DNA synthesis and repair, cell division, and growth. As an essential vitamin, Folic acid must be obtained through diet or supplementation, as humans cannot synthesize it. Vitamin B-9 is a crucial prenatal vitamin. that also helps the body use iron properly. It has the chemical formula C19H19N7O6. You can find detailed UV spectra of Folic Acid and information about its various lambda maxima by visiting the following link.
Thiamine, also known as vitamin B1, is an essential nutrient with the chemical formula C12H17ClN4OS. It plays a crucial role in energy metabolism and the proper functioning of the nervous system. It helps the body convert carbohydrates into energy and is vital for the growth, development, and function of cells. You can find detailed UV spectra of Vitamin B1 (Thiamine) and information about its various lambda maxima by visiting the following link.
Cyanocobalamin, also known as vitamin B12, is an essential nutrient with the chemical formula C63H88CoN14O14P. It is naturally present in some foods and available as a dietary supplement and as prescription medication. Vitamin B12 exists in several forms and contains the mineral cobalt, so compounds with vitamin B12 activity are collectively called “cobalamins”. It plays an essential role in the production of the red blood cells and DNA, as well as in the proper functioning of the nervous system. You can find detailed UV spectra of Cyanocobalamin and information about its various lambda maxima by visiting the following link.
Thiamine Pyrophosphate, an active form of Vitamin B1, is a vitamin with the chemical formula C12H19N4O7P2S+. B1 is a water soluble vitamin with a key function of energy metabolism. It is not produced in the body naturally and is stored in very small amounts; therefore must be regularly consumed through diet of whole rains, nuts, seeds, and legumes. It is vital as a coenzyme in carbohydrate metabolism and in decarboxylation of pyruvate, alpha-ketoglutarate, and branched-chain keto acids. You can find detailed UV spectra of Thiamine and information about its various lambda maxima by visiting the following link.
Vitamin B2 (Riboflavin), Nicotinic Acid (Vitamin B3), Vitamin B6 (Pyridoxine), Folic Acid, Cyanocobalamin, Thiamine diphosphate (Thiamine pyrophosphate), Vitamin B1 (Thiamine), Pantothenic Acid (Vitamin B5), Biotin can be retained and analyzed using the Chromni stationary phase column. The analysis utilizes a gradient method with a simple mobile phase consisting of water, acetonitrile (MeCN). Detection is performed using UV.
| Column | Chromni, 4.6 x 150 mm, 3 µm, 100 A, dual ended |
| Mobile Phase | MeCN/H2O – see table |
| Buffer | H3PO4 – see table |
| Flow Rate | 1.0 ml/min |
| Detection | UV 200 nm, 275 nm |
Gradient Elution Program for HPLC Method
| Time (min) | A – H2O (%) | B – MeCN (%) | C – H3PO4 1% in H2O (%) | Notes |
| 0 | 0 | 90 | 10 | Starting Conditions (Hold) |
| 4 | 0 | 90 | 10 | Gradient Start |
| 15 | 20 | 30 | 50 | Gradient End |
| 15.01 | 0 | 90 | 10 | Column Equilibration |
| 25 | 0 | 90 | 10 | End of Run |
| Class of Compounds | Vitamins |
| Analyzing Compounds | Vitamin B2 (Riboflavin), Nicotinic Acid (Vitamin B3), Vitamin B6 (Pyridoxine), Folic Acid, Cyanocobalamin, Thiamine diphosphate (Thiamine pyrophosphate), Vitamin B1 (Thiamine), Pantothenic Acid (Vitamin B5), Biotin |
Application Column
Chromni
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 3 µm
Pore Size: 100 A
Column options: dual ended
Cyanocobalamin
Folic Acid
Nicotinic Acid (Vitamin B3)
Pantothenic Acid (Vitamin B5)
Thiamine diphosphate (Thiamine pyrophosphate)
Vitamin B1 (Thiamine)
Vitamin B2 (Riboflavin)
Vitamin B6 (Pyridoxine)
HPLC Method for Analysis of Water-Soluble Vitamins (B1, B2, B3, B6) on Primesep 100 Column
August 28, 2024
High Performance Liquid Chromatography (HPLC) Method for Analysis of Water-Soluble Vitamins (B1, B2, B3, B6) on Primesep 100 by SIELC Technologies
Separation type: Liquid Chromatography Mixed-mode SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of Vitamin B1 (Thiamine), Vitamin B2 (Riboflavin), Nicotinamide, Vitamin B6 (Pyridoxine), Pyridoxamine, Pyridoxal Phosphate
Water-Soluble Vitamins (B1, B2, B3, B6) can be retained, separated and analyzed using a Primesep 100 mixed-mode stationary phase column. The analysis employs an gradient method with a simple mobile phase comprising water, acetonitrile (MeCN), and sulfuric acid as a buffer. This method allows for detection using UV 300 nm.
You can find detailed UV spectra of Vitamin B1 (Thiamine), Vitamin B2 (Riboflavin), Nicotinamide, Vitamin B6 (Pyridoxine), Pyridoxamine, Pyridoxal Phosphate and information about its various lambda maxima by visiting the following links: Vitamins (B1, B2, B3, B6)
| Column | Primesep 100, 4.6 x 150 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN – 10% |
| Buffer | Gradient H2SO4 -0.1-0.5% in 10 min |
| Flow Rate | 1.0 ml/min |
| Detection | UV 270 nm |
| Class of Compounds | Water-Soluble Vitamins (B1, B2, B3, B6) |
| Analyzing Compounds | Vitamin B1 (Thiamine), Vitamin B2 (Riboflavin), Nicotinamide, Vitamin B6 (Pyridoxine), Pyridoxamine, Pyridoxal Phosphate |
Application Column
Primesep 100
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended
Pyridoxal Phosphate
Pyridoxamine
Vitamin B1 (Thiamine)
Vitamin B2 (Riboflavin)
Vitamin B6 (Pyridoxine)
HPLC Method for Analysis of Thiamine on Primesep 100 Column
August 13, 2024
High Performance Liquid Chromatography (HPLC) Method for Analysis of Vitamin B1 (Thiamine) on Primesep 100 by SIELC Technologies
Separation type: Liquid Chromatography Mixed-mode SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of Vitamin B1 (Thiamine)
Thiamine, also known as vitamin B1, is an essential nutrient that plays a crucial role in energy metabolism and the proper functioning of the nervous system. It helps the body convert carbohydrates into energy and is vital for the growth, development, and function of cells.
Vitamin B1 (Thiamine) can be retained, separated and analyzed using a Primesep 100 mixed-mode stationary phase column. The analysis employs an isocratic method with a simple mobile phase comprising water, acetonitrile (MeCN), and sulfuric acid as a buffer. This method allows for detection using UV 250 nm.
You can find detailed UV spectra of Vitamin B1 (Thiamine) and information about its various lambda maxima by visiting the following link.
| Column | Primesep 100, 4.6 x 150 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN – 10% |
| Buffer | H2SO4 -0.4% |
| Flow Rate | 1.0 ml/min |
| Detection | UV 250 nm |
| Samples | 1 mg/ml in H2O |
| Injection volume | 1 µl |
| LOD* | 60 ppb (250 nm) |
| Class of Compounds | Vitamins |
| Analyzing Compounds | Vitamin B1 (Thiamine) |
Application Column
Primesep 100
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended
UV-Vis Spectrum of Thiamine
July 23, 2024
Access the UV-Vis Spectrum SIELC Library
UV-Vis Spectrum of Thiamine. Absorption Maxima: 246 nm.
If you are looking for optimized HPLC method to analyze Vitamin B1 (Thiamine) check our HPLC Applications library
For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.
HPLC Method for Separation of Vitamins Group B such as Nicotinic Acid, Pyridoxine, Niacinamide, Pantothenic Acid, Riboflavin on Obelisc N Column
August 22, 2008

Separation of vitamins group B is achieved on Obelisc N column in HILIC mixed-mode. Vitamins of this group are different in polarity and ionic properties. Retention and separation is achieved by optimization of amount of ACN, buffer and buffer pH. Combination of UV and ELSD detection is used to monitor HPLC separation. B vitamins are water-soluble vitamins that play an important role in cell metabolism. Supplements containing all six are generally referred to as a vitamin B complex. Individual B vitamin supplements are referred to by the specific name of each vitamin. This method can be used to analyze individual B vitamins as well as vitamin B complex. Isolation of impurities as well as degradation products is possible by preparative chromatography.
| Column | Obelisc N , 4.6×150 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O |
| Buffer | AmAC pH 4.5 – 10 mM |
| Flow Rate | 1.0 ml/min |
| Detection | UV, 270 nm, ELSD |
| Class of Compounds |
Drug, Vitamin B₆, Hydrophobic, Ionizable |
| Analyzing Compounds | Pyridoxine, Niacinamide, Pantothenic acid, Riboflavin |
Application Column
Obelisc N
SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.
Select optionsNiacinamide
Pantothenic Acid (Vitamin B5)
Vitamin B1 (Thiamine)
Vitamin B2 (Riboflavin)
Vitamin B3 (Niacin)
Vitamin B6 (Pyridoxine)
UV Detection
HPLC Separation of Vitamin B
April 3, 2004

Primesep C separates B vitamins with baseline resolution by a combination of cation exchange, complex formation, and hydrophobic interactions. Vitamin B1 (thiamine), vitamin B2 (riboflavin), and vitamin B6 (pyridoxine) are separated with a mobile phase of water, acetonitrile (MeCN, ACN) and triethylamine (TEA) phosphate with UV detection at 280 nm.
| Column | Primesep C , 4.6×150 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O -10/90% |
| Buffer | NEt3H3PO4 Ph 3.0 – 20 Mm |
| Flow Rate | 1.0 ml/min |
| Detection | UV, 280 nm |
| Class of Compounds |
Drug, Vitamin B₆, Hydrophobic, Ionizable |
| Analyzing Compounds | Pyridoxine, Thiamine, Riboflavin |
Application Column
Primesep C
The Primesep family of mixed-mode columns offers a wide variety of stationary phases, boasting unprecedented selectivity in the separation of a broad array of chemical compounds across multiple applications. Corresponding Primesep guard columns, available with all stationary phases, do not require holders. SIELC provides a method development service available to all customers. Inquire about our specially-tailored custom LC-phases for specific separations.
Select optionsVitamin B1 (Thiamine)
Vitamin B2 (Riboflavin)
Vitamin B6 (Pyridoxine)
Vitamins






