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Oxythiamine

CAS No.
136-16-3
Chemical Name:
Oxythiamine
Synonyms
azolium;oxythiamin;oxythiamine;Hydroxythiamin;oxythiamine(1+);OXYTHIAMINE HCL;Thiamine Impurity 19;OXYTHIAMINE HYDROCHLORIDE;Oxythiamine·HCl≥ 99% (assay);Oxythiamine (Hydroxythiamin)
CBNumber:
CB6428626
Molecular Formula:
C12H17Cl2N3O2S
Molecular Weight:
338.25
MDL Number:
MFCD00050656
MOL File:
136-16-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-04-24 14:58:52

Oxythiamine Properties

Density 1.2416 (rough estimate)
refractive index 1.6740 (estimate)
storage temp. −20°C
solubility DMSO : 51.67 mg/mL (194.00 mM)
form Solid
color White to off-white
FDA UNII 1MF36SYZ22

SAFETY

Risk and Safety Statements

WGK Germany  3
RTECS  XJ7034100
Toxicity LD50 scu-mus: 1430 mg/kg PCJOAU16,848,82

Oxythiamine price More Price(24)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
ChemScene CS-0028461 Oxythiamine 96.28% 136-16-3 5mg $27 2026-06-04 Buy
ChemScene CS-0028461 Oxythiamine 96.28% 136-16-3 10mg $38 2026-06-04 Buy
ChemScene CS-0028461 Oxythiamine 96.28% 136-16-3 25mg $70 2026-06-04 Buy
ChemScene CS-0028461 Oxythiamine 96.28% 136-16-3 50mg $114 2026-06-04 Buy
ChemScene CS-0028461 Oxythiamine 96.28% 136-16-3 100mg $173 2026-06-04 Buy
Product number Packaging Price Buy
CS-0028461 5mg $27 Buy
CS-0028461 10mg $38 Buy
CS-0028461 25mg $70 Buy
CS-0028461 50mg $114 Buy
CS-0028461 100mg $173 Buy

Oxythiamine Chemical Properties, Uses, Production

Chemical Properties

White solid

Uses

Oxythiamine (Hydroxythiamin), an analogue of anti-metabolite, can suppress the non-oxidative synthesis of ribose and induce cell apoptosis. Oxythiamine is a thiamine antagonist and inhibits transketolase (TK). Oxythiamine inhibits cancer cell apoptosis and inhibits cell proliferation[1][2][3].

Definition

ChEBI: A 1,3-thiazolium cation that is 5-(2-hydroxyethyl)-4-methyl-1,3-thiazole alkylated at the N3 position by a (2-methyl-4-oxo-1,4-dihydropyrimidin-5-yl)methyl group.

Safety Profile

Moderately toxic by subcutaneous route. Experimental reproductive effects. Whenheated to decomposition it emits toxic fumes of NOx and SOx.

in vivo

Oxythiamine (100-500 mg/kg, i.p. 4 days) inhibits tumor growth in Ehrlich's ascites tumor hosting mice[2].
Oxythiamine (250 or 500 mg/kg, daily for 5 week) inhibits tumor cell metastasis via inhibition of MMPs in mice implanted (s.c.) with LLC cells[4].

Animal Model:Ehrlich's ascites tumor hosting mice[2]
Dosage:100-500 mg/kg
Administration:i.p., 4 days
Result:Inhibited tumor growth by 43% at 300 mg/kg and 84% at 500 mg/kg.

References

[1] Wang J, et al. Inhibition of transketolase by oxythiamine altered dynamics of protein signals in pancreatic cancer cells. Exp Hematol Oncol. 2013 Jul 27;2:18. DOI:10.1186/2162-3619-2-18
[2] Ras B, et al. Oxythiamine and dehydroepiandrosterone induce a G1 phase cycle arrest in Ehrlich's tumor cells through inhibition of the pentose cycle. FEBS Lett. 1999 Jul 30;456(1):113-8. DOI:10.1016/s0014-5793(99)00924-2
[3] Bai L, et al. A dose- and time-dependent effect of oxythiamine on cell growth inhibition in non-small cell lung cancer. Cogn Neurodyn. 2022 Jun;16(3):633-641. DOI:10.1007/s11571-021-09725-7
[4] Yang CM, et al. The in vitro and in vivo anti-metastatic efficacy of oxythiamine and the possible mechanisms of action. Clin Exp Metastasis. 2010 May;27(5):341-9. DOI:10.1007/s10585-010-9331-2

Oxythiamine Preparation Products And Raw materials

Raw materials

Preparation Products

Oxythiamine Suppliers

Global Suppliers ( 30)
Supplier Tel Email Country ProdList Advantage
Shanghai Macklin Biochemical Co.,Ltd. 15221275939 15221275939 shenlinxing@macklin.cn China 15775 55
Hubei Yangxin Medical Technology Co., Ltd. 15374522761 3003392093@yongstandards.com China 9995 55
Aikon International Limited 025-58859352 15955137747 sales01@aikonchem.com China 16021 58
Shanghai Jizhi Biochemical Technology Co. Ltd. 021-4009004166/18616739031 18616739031 3007523370@qq.com China 40000 58
TargetMol Chemicals Inc. +1-781-999-5354; +1-00000000000 marketing@targetmol.com United States 32431 58
ChemeGen(Shanghai) Biotechnology Co.,Ltd. 18818260767 sales@chemegen.com China 11123 58
Shanghai hongqu biomedical technology co. LTD 88888888888 hongquchem@qq.com China 5123 58
Beijing Jin Ming Biotechnology Co., Ltd. 010-60605840 psaitong@jm-bio.com China 27626 58
Kaifeng Mingren Pharmaceutical Co.,LTD 0371-65741762 sales@hasunny.com China 2377 58
TargetMol Chemicals Inc. 4008200310 15002144251 marketing@tsbiochem.com China 24951 58
Thiazolium,3-[(3,4-dihydro-2-methyl-4-oxo-5-pyrimidinyl)methyl]-5-(2-hydroxyethyl)-4-methyl- Oxythiamine·HCl≥ 99% (assay) oxythiamine(1+) Oxythiamine (Hydroxythiamin) Oxythiamine (Synonyms: Hydroxythiamin) thiazolium,5-(2-hydroxyethyl)-3-((4-hydroxy-2-methyl-5-pyrimidinyl)methyl)-4-m 5-(2-HYDROXYETHYL)-3-(4-HYDROXY-2-METHYL-5-PYRIMIDINYLMETHYL)-4-METHYLTHIAZOLIUM CHLORIDE 5-[2-HYDROXYETHYL]-3-[4-HYDROXY-2-METHYL-5-PYRIMIDINYLMETHYL]-4-METHYLTHIAZOLIUM CHLORIDE HYDROCHLORIDE 5-(2-hydroxyethyl)-3-((4-hydroxy-2-methyl-5-pyrimidinyl)methyl)-4-methyl-thi oxythiamine 3-[(1,4-Dihydro-2-methyl-4-oxopyrimidin-5-yl)methyl]-5-(2-hydroxyethyl)-4-methylthiazol-3-ium 3-[(3,4-Dihydro-2-methyl-4-oxopyrimidine-5-yl)methyl]-5-(2-hydroxyethyl)-4-methylthiazolium 5-(2-Hydroxyethyl)-3-[(4-hydroxy-2-methyl-5-pyrimidinyl)methyl]-4-methylthiazol-3-ium OXYTHIAMINE HCL OXYTHIAMINE HYDROCHLORIDE Hydroxythiamin Oxythiamine DISCONTINUED. Please see O878508. Thiamine Impurity 19 Thiamine Impurity 19 Monomer (Oxythiamine Monomer) azolium oxythiamin 136-16-3 C12H15N3O2SHCl C12H16N3O2S