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Vitamin D4 Vitamin D4 (22-Dihydroergocalciferol) is a Vitamin D derived from fungi. The precursor of Vitamin D4 is 22,23-dihydroergosterol [1]. Uses: Scientific research. Group: Signaling pathways. Alternative Names: 22-Dihydroergocalciferol. CAS No. 511-28-4. Pack Sizes: 1 mg; 5 mg; 10 mg; 25 mg; 50 mg. Product ID: HY-75958. MedChemExpress MCE
Vitamin D4 Vitamin D4 is the active analogue of Vitamin D. Uses: Food additives. Synonyms: RACUMIN D; OLEOVITAMIN D3; VITAMIN D; ANTI-RACHITIC VITAMIN; CALCIOL; CHOLECALCIFEROLUM; COLECALCIFEROL; ACTIVATED 7-DEHYDROCHOLESTEROL. Grades: >98%. CAS No. 511-28-4. Molecular formula: C28H46O. Mole weight: 398.66. BOC Sciences 10
Vitamin K2 (MK-4)-(5,6,7,8-d4,2-methyl-d3) ?98 atom % D, ?95% (CP). Group: Fluorescence/luminescence spectroscopy. Alfa Chemistry Analytical Products 3
Vitamin K2 (MK-7)-(5,6,7,8-d4,2-methyl-d3) ?98 atom % D, ?95% (CP). Group: Fluorescence/luminescence spectroscopy. Alfa Chemistry Analytical Products 3
Vitamin K2 (MK-9)-(5,6,7,8-d4,2-methyl-d3) ?98 atom % D, ?95% (CP). Group: Fluorescence/luminescence spectroscopy. Alfa Chemistry Analytical Products 3
Vitamin K-d7 (5,6,7,8-d4, 2-methyl-d3) 99 atom % D, 97% (CP Sum of E & Z Isomers). Group: Fluorescence/luminescence spectroscopy. Alfa Chemistry Analytical Products
1α-Hydroxy VD4 1α-Hydroxy VD4 is an analogue of doxercalciferol, a drug used for the treatment of secondary hyperparathyroidism and metabolic bone disease. Synonyms: 1alpha-Hydroxy VD4; 1α-Hydroxy vitamin D4; (5Z,7E)-9,10-secoergosta-5,7,10(19) -triene-1α,3β-diol; dihydrodoxercalciferol. Grades: >98%. CAS No. 143032-85-3. Molecular formula: C28H46O2. Mole weight: 414.674. BOC Sciences 8
1-Phenyl-2,4-pyrrolidinedione 1-Phenyl-2,4-pyrrolidinedione is a synthetic intermediate and is obtained from N-Phenylglycine Ethyl Ester and Diethyl Malonate (D444420) which is used in the preparation of barbiturates, artificial flavourings, vitamin B1, and vitamin B6 as well as in perfumes. Group: Biochemicals. Grades: Highly Purified. CAS No. 114473-81-3. Pack Sizes: 100mg, 500mg. Molecular Formula: C10H9NO2, Molecular Weight: 175.18. US Biological Life Sciences. USBiological 9
Worldwide
2-[[[2- (3, 4-Dihydro-6, 7-dimethoxy-4-methyl-3-oxo-2-quinoxalinyl) ethyl]amino]carbonyl]-hydrazinecarboxylic Acid Ethyl Ester 2-[[[2- (3, 4-Dihydro-6, 7-dimethoxy-4-methyl-3-oxo-2-quinoxalinyl) ethyl]amino]carbonyl]-hydrazinecarboxylic Acid Ethyl Ester is an intermediate in the synthesis of DMEQ-TAD (D494400), a reagent for fluorescence-labeling of Vitamin D and its use in assaying Vitamin D metabolites. Group: Biochemicals. Grades: Highly Purified. CAS No. 132788-57-9. Pack Sizes: 5mg, 10mg. Molecular Formula: C17H23N5O6. US Biological Life Sciences. USBiological 9
Worldwide
2-(3,7,11,15-Tetramethylhexadecyl)-5,6,7,8-tetrahydronaphthalene-1,4-dione 2-(3,7,11,15-Tetramethylhexadecyl)-5,6,7,8-tetrahydronaphthalene-1,4-dione is an impurity in the synthesis of β,γ-Dihydro Vitamin K1 (D455055), an Vitamin K1 derivative. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg, 5mg. Molecular Formula: C30H50O2. US Biological Life Sciences. USBiological 9
Worldwide
2-Methyl-3-(3'-carboxybutyl)-1,4-naphthoquinone-5,6,7,8-D4 2-Methyl-3-(3'-carboxybutyl)-1,4-naphthoquinone-5,6,7,8-D4 is deuterated form of 2-Methyl-3-(3'-carboxybutyl)-1,4-naphthoquinone (M294085), which is a metabolite of Vitamin K2, mainly MK-4 (M218595), known as a hemostatic agent and is used as adjunctive therapy for the pain of osteoporosis. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug, 1mg. Molecular Formula: C16H12D4O4, Molecular Weight: 276.32. US Biological Life Sciences. USBiological 10
Worldwide
(2R) ?-3, ?4-?Dihydro-?6-?hydroxy-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?5-?carboxylic-d3 Acid (2R) ?-3, ?4-?Dihydro-?6-?hydroxy-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?5-?carboxylic-d3 Acid is an intermediate in synthesizing γ-Tocopherol-d4 (T526142), a labelled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils. Group: Biochemicals. Grades: Highly Purified. CAS No. 842129-88-8. Pack Sizes: 5mg, 10mg. Molecular Formula: C29H45D3O4. US Biological Life Sciences. USBiological 10
Worldwide
(2R) ?-5-? (Bromomethyl-?d2) ?-?3, ?4-?dihydro-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?6-?ol-d5 Acetate (2R) ?-5-? (Bromomethyl-?d2) ?-?3, ?4-?dihydro-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?6-?ol-d5 Acetate is an intermediate in synthesizing γ-Tocopherol-d4 (T526142), a labelled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils. Group: Biochemicals. Grades: Highly Purified. CAS No. 842129-85-5. Pack Sizes: 5mg, 10mg. Molecular Formula: C31H46D5BrO3. US Biological Life Sciences. USBiological 10
Worldwide
(2R) ? -6-? (acetyloxy) ? -? 3, ? 4-? dihydro-? 2, ? 8-? dimethyl-? 7-? (methyl-? d3) ? -? 2-? [ (4R, ? 8R) ? -? 4, ? 8, ? 12-? trimethyltridecyl] ? -2H-? 1-? Benzopyran-? 5-? carboxaldehyde-? d4 (2R) ? -6-? (acetyloxy) ? -? 3, ? 4-? dihydro-? 2, ? 8-? dimethyl-? 7-? (methyl-? d3) ? -? 2-? [ (4R, ? 8R) ? -? 4, ? 8, ? 12-? trimethyltridecyl] ? -2H-? 1-? Benzopyran-? 5-? carboxaldehyde-? d4 is an intermediate in synthesizing γ-Tocopherol-d4 (T526142), a labelled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils. Group: Biochemicals. Grades: Highly Purified. CAS No. 842129-86-6. Pack Sizes: 5mg, 10mg. Molecular Formula: C31H46D4O4. US Biological Life Sciences. USBiological 10
Worldwide
(2R) ?-6-? (Acetyloxy) ?-?3, ?4-?dihydro-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?5-?carboxylic-d3 Acid (2R) ?-6-? (Acetyloxy) ?-?3, ?4-?dihydro-?2, ?8-?dimethyl-?7-? (methyl-?d3) ?-?2-? [ (4R, ?8R) ?-?4, ?8, ?12-?trimethyltridecyl] ?-2H-?1-?benzopyran-?5-?carboxylic-d3 is an intermediate in synthesizing γ-Tocopherol-d4 (T526142), a labelled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils. Group: Biochemicals. Grades: Highly Purified. CAS No. 842129-87-7. Pack Sizes: 1mg, 2.5mg. Molecular Formula: C31H47D3O5. US Biological Life Sciences. USBiological 10
Worldwide
(3 β,22E,24?)-Ergosta-5,22-diene-3,24,25-triol-d3 3-Acetate (3 β,22E,24?)-Ergosta-5,22-diene-3,24,25-triol 3-Acetate is a reactant used in the preparation of labelled 24,25-Dihydroxyvitamin D2 (D455085) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
(3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol (3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol is an intermediate used in the preparation of 24,25-Dihydroxy Vitamin D2 (D455085) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
(3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol 3-Acetate (3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol 3-Acetate is an intermediate in the preparation of 24,25-Dihydroxyvitamin D2 (D455085) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Alternative Names: (3 β,22E,24?)-Ergosta-5,7,22-triene-3,24,25-triol 3-Acetate. Grades: Highly Purified. CAS No. 69425-77-0. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
(3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol-d3 (3 β,22E)-Ergosta-5,7,22-triene-3,24,25-triol-d3 is an intermediate used in the preparation of labelled 24,25-Dihydroxy Vitamin D2 (D455087) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug. US Biological Life Sciences. USBiological 3
Worldwide
(3 β, 5α, 8α, 22E)-5, 8-[N, N-(4-Phenylurazole)]-ergosta-6, 22-diene-3, 24, 25-triol 3-Acetate (3 β, 5α, 8α, 22E)-5, 8-[N, N-(4-Phenylurazole)]-ergosta-6, 22-diene-3, 24, 25-triol 3-Acetate is an intermediate in the preparation of 24,25-Dihydroxy Vitamin D2 (D455085) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
(3 β, 5α, 8α, 22E)-5, 8-[N, N-(4-Phenylurazole)]-ergosta-6, 22-diene-3, 24, 25-triol-d3 3-Acetate (3 β, 5α, 8α, 22E)-5, 8-[N, N-(4-Phenylurazole)]-ergosta-6, 22-diene-3, 24, 25-triol-d3 3-Acetate is a labelled intermediate in the preparation of 24,25-Dihydroxy Vitamin D2 (D455085) a hydroxylated metabolite of Vitamin D2 (V676040). Group: Biochemicals. Alternative Names: (3 β, 5α, 8α, 22E)-3-Acetyloxy-24, 25-dihydroxy-5, 8-(3, 5-dioxo-4-phenyl)-1, 2, 4-triazolidinol-ergosta-6, 22-diene-d3. Grades: Highly Purified. Pack Sizes: 500ug. US Biological Life Sciences. USBiological 3
Worldwide
3-(N-Maleimido)propionate Pyridoxamine-d4 3-(N-Maleimido)propionate Pyridoxamine-d4 is deuterium labeled 3-(N-Maleimido)propionate Pyridoxamine (M140500), which is modified vitamin B6 pyridoxamine. Pyridoxamine (P991725) has been shown to slow down the progression of diabetic nephropathy. Furthermore, pyridoxine may be linked to the prevention of cancer and cardiovascular disease. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C15H13D4N3O5, Molecular Weight: 323.339999999999. US Biological Life Sciences. USBiological 10
Worldwide
3-(N-Maleimido)propionate Thiamine-d4 3-(N-Maleimido)propionate Thiamine-d4 is deuterium labeled 3-(N-Maleimido)propionate Thiamine (M140600), which is modified vitamin B1 maleimide. Thiamine (T344185) is a cofactor in carbohydrate metabolism. Deficiency in thiamine leads to many diseases including beriberi, Wernicke-Korsakoff syndrome (damage to the brain and central nervous system), and Alzheimer. In addition, thiamine is useful in metabolism research related to nutrient-sensitized drug screening. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 2.5mg, 5mg. Molecular Formula: C19H18D4N5O4S, Molecular Weight: 420.5. US Biological Life Sciences. USBiological 10
Worldwide
4-Aminobenzoic Acid-d4 Labeled p-Aminobenzoic Acid. Widely distributed in nature as a B complex factor. Baker’s yeast contains 5 to 6 ppm, brewer’s yeast from 10 to 100 ppm. Occurs free and in ester form. Group: Biochemicals. Alternative Names: p-Aminobenzoic Acid-d4; Bacterial Vitamin H1-d4; p-Carboxyaniline-d4; p-Carboxyphenylamine-d4; Actipol-d4; Amben-d4; PABA-d4; Pabacyd-d4; Pabafilm-d4; Trichochromogenic-d4 Factor; Vitamin BX-d4; Vitamin H'-d4. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 1
Worldwide
Ascorbic Acid-[d4] Ascorbic Acid-[d4] is a labelled Ascorbic Acid. Ascorbic Acid, also known as Vitamin C, is a naturally occurring organic compound with antioxidant properties. It is used to prevent and treat scurvy. Vitamin C is an essential nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters. Synonyms: (R)-5-((S)-1,2-dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one. Molecular formula: C6H4O6D4. Mole weight: 180.15. BOC Sciences
Diethyl Malonate-d2 Diethyl Malonate-d2 is the isotope labelled analog of Diethyl Malonate (D444420). Diethyl Malonate occurs naturally in grapes and strawberries. It is used in the preparation of barbiturates, artificial flavourings, vitamin B1, and vitamin B6 as well as in perfumes. Group: Biochemicals. Grades: Highly Purified. CAS No. 4303-49-5. Pack Sizes: 1g, 5g. Molecular Formula: C7H10D2O4. US Biological Life Sciences. USBiological 4
Worldwide
Nicotinamide-2,4,5,6-d4 Nicotinamide-2,4,5,6-d4. Uses: Designed for use in research and industrial production. Additional or Alternative Names: Niacinamide; 3-Pyridinecarboxamide; Vitamin B 3. Product Category: Heterocyclic Organic Compound. Appearance: White Solid. CAS No. 347841-88-7. Molecular formula: C6H2D4N2O. Mole weight: 126.15. Purity: 98 atom % D. Product ID: ACM347841887. Alfa Chemistry — ISO 9001:2015 Certified. Alfa Chemistry. 5
Nicotinamide-d4 Labelled Nicotinamide, precursor of the coenzymes NAD and NADP. Nicotinamide is a water soluble vitamin (enzyme cofactor). Group: Biochemicals. Alternative Names: 3-Pyridinecarboxamide-d4, 3- (Aminocarbonyl) pyridine-d4, 3-Amidopyridine-d4, 3-Carbamoylpyridine-d4, 3-Pyridinecarboxylic acid amide-d4, Aminicotin-d4, Benicot-d4, Nicosylamide-d4, Nicotilamide-d4, Nicotinic Acid Amide-d4, Vitamin B-d4, Vitamin B3-d4. Grades: Highly Purified. CAS No. 347841-88-7. Pack Sizes: 2.5mg. Molecular Formula: C6H2D4N2O, Molecular Weight: 126.15. US Biological Life Sciences. USBiological 1
Worldwide
Nicotinamide-d4 (Major) Labeled Nicotinamide, precursor of the coenzymes NAD and NADP. Nicotinamide is a water soluble vitamin (enzyme cofactor). Group: Biochemicals. Alternative Names: 3-Pyridinecarboxamide-d4; 3- (Aminocarbonyl) pyridine-d4; 3-Amidopyridine-d4; 3-Carbamoylpyridine-d4; 3-Pyridinecarboxylic acid amide-d4; Aminicotin-d4; Benicot-d4. Grades: Highly Purified. CAS No. 347841-88-7. Pack Sizes: 10mg. US Biological Life Sciences. USBiological 2
Worldwide
Nicotinic Acid-13C6,d4 Labeled Nicotinic acid. It is a precursor of the coenzymes NAD and NADP. Widely distributed in nature; appreciable amounts are found in liver, fish, yeast and cereal grains. Dietary deficiency is associated with pellagra. The term “niacin” has also been applied to nicotinamide or to other derivatives exhibiting the biological activity of nicotinic acid. Vitamin (enzyme cofactor). Group: Biochemicals. Alternative Names: 3-Pyridinecarboxylic Acid-13C6,d4. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
Nicotinic Acid-d3 (major) Labeled Nicotinic acid. It is a precursor of the coenzymes NAD and NADP. Widely distributed in nature; appreciable amounts are found in liver, fish, yeast and cereal grains. Dietary deficiency is associated with pellagra. The term “niacin” has also been applied to nicotinamide or to other derivatives exhibiting the biological activity of nicotinic acid. Vitamin (enzyme cofactor). A representative lot contains >20% d4. Group: Biochemicals. Alternative Names: 3-Pyridinecarboxylic Acid-d3; 3-Carboxylpyridine-d3; 3-Carboxypyridine-d3; Akotin-d3; Apelagrin-d3; Niacin-d3; Niacor-d3; Niaspan-d3; Nicacid-d3; Pelonin-d3; Vitamin B3-d3; Vitamin B5-d3; Wampocap-d3; β-Pyridinecarboxylic Acid-d3. Grades: Highly Purified. CAS No. 861405-75-6. Pack Sizes: 2.5mg. US Biological Life Sciences. USBiological 2
Worldwide
Nicotinic Acid-d4 Labeled Nicotinic acid. It is a precursor of the coenzymes NAD and NADP. Widely distributed in nature; appreciable amounts are found in liver, fish, yeast and cereal grains. Dietary deficiency is associated with pellagra. The term “niacin” has also been applied to nicotinamide or to other derivatives exhibiting the biological activity of nicotinic acid. Vitamin (enzyme cofactor). Group: Biochemicals. Alternative Names: 3-Pyridinecarboxylic Acid-d4. Grades: Highly Purified. CAS No. 66148-15-0. Pack Sizes: 2.5mg. US Biological Life Sciences. USBiological 2
Worldwide
rac Biotin-d4 Growth factor present in minute amounts in every living cell. Plays an indispensable role in numerous naturally occurring carboxylation reactions. Occurs mainly bound to proteins or polypeptides. The richest sources are liver, kidney, pancreas, yeast, and milk. The biotin content of cancerous tumors is higher than that of normal tissue. Group: Biochemicals. Alternative Names: rel-(3aS,4S,6aR)-Hexahydro-2-oxo-1H-thieno[3,4-d]imidazole-4-pentanoic Acid-d4; rac Vitamin B7-d4; Coenzyme R-d4; Factor S-d4; Lutavit H2-d4; Meribin-d4; NSC 63865-d4; Rovimix H2-d4. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
(2RS,4R,8R)-δ-Tocopherol-d4 (Mixture of Diastereomers) Labeled δ-Tocopherol. One of the naturally occurring forms of Vitamin E. Isolated from soybean oil. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
γ-Tocopherol-d4 γ-Tocopherol-d 4 is the deuterium labeled γ-Tocopherol. γ-Tocopherol (D-γ-Tocopherol) is a potent cyclooxygenase (COX) inhibitor. γ-Tocopherol is a naturally occurring form of Vitamin E in many plant seeds, such as corn oil and soybeans. γ-Tocopherol possesses antiinflammatory properties and anti-cancer activity[1][2]. Uses: Scientific research. Group: Isotope-labeled compounds. CAS No. 1329652-13-2. Pack Sizes: 1 mg; 5 mg; 10 mg. Product ID: HY-N7148S1. MedChemExpress MCE
γ-Tocopherol-d4 (major) Labeled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide

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