ChemicalBook >> CAS DataBase List >>Pseudothiohydantoin

Pseudothiohydantoin

Pseudothiohydantoin structure

CAS No.: 556-90-1

Chemical Name:: Pseudothiohydantoin

Synonyms: 2-aMinothiazol-4-ol;2-aminothiazol-4(5H)-one;4(5H)-Thiazolone, 2-imino-;usafdm-1;NSC 2858;NSC45956;USAF dm-1;5324-10-7;NSC 45956;SBB004297

CBNumber:: CB4853824

Molecular Formula:: C3H4N2OS

Molecular Weight:: 116.14

MDL Number:: MFCD00003186

MOL File:: 556-90-1.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 01:16:55

Request For Quotation

Pseudothiohydantoin Properties

Melting point	249 °C (dec.)(lit.)
Boiling point	253.5±23.0 °C(Predicted)
Density	1.637 g/cm3
refractive index	1.6550 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
pka	0.54±0.20(Predicted)
form	solid
Appearance	White to yellow Solid
EWG's Food Scores	1
EPA Substance Registry System	4(5H)-Thiazolone, 2-amino- (556-90-1)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07,GHS08,GHS02

Signal word

Danger

Hazard statements

H315-H319-H304-H225

Precautionary statements

P501-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P331-P337+P313-P305+P351+P338-P362+P364-P303+P361+P353-P332+P313-P301+P310-P403+P235-P405

Hazard Codes

Safety Statements

24/25

WGK Germany

RTECS

XJ6276000

TSCA

TSCA listed

HazardClass

IRRITANT

HS Code

29349990

NFPA 704

	1
0		0

Pseudothiohydantoin price More Price(52)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	P2911	Pseudothiohydantoin	556-90-1	5G	$43	2026-04-30	Buy
TCI Chemical	P2911	Pseudothiohydantoin	556-90-1	25G	$129	2026-04-30	Buy
Apolloscientific	OR27978	2-Amino-4,5-dihydro-1,3-thiazol-4-one 97%	556-90-1	5g	$21	2026-06-04	Buy
Matrix Scientific	008657	2-Imino-thiazolidin-4-one	556-90-1	25.00g	$26	2026-05-18	Buy
Matrix Scientific	008657	2-Imino-thiazolidin-4-one	556-90-1	100.00g	$76	2026-05-18	Buy

Product number	Packaging	Price	Buy
P2911	5G	$43	Buy
P2911	25G	$129	Buy
OR27978	5g	$21	Buy
008657	25.00g	$26	Buy
008657	100.00g	$76	Buy

Pseudothiohydantoin Chemical Properties, Uses, Production

Chemical Properties

white to yellowish fine needles or powder

Uses

2-Amino-4,5-dihydro-1,3-thiazol-4-one, HCl

Synthesis

105-39-5

17356-08-0

556-90-1

A) Synthesis of 2-imino-4-thiazolidinone (IV): 20g (0.263mol) of thiourea (III) and 50ml of ethanol were added to a 100ml round bottom flask fitted with a condenser. The mixture was heated to reflux. Over a period of 30 min, 32.22 g (0.263 mol) of ethyl chloroacetate (II) was slowly added dropwise to the reaction system. The reflux state was maintained and the progress of the reaction was monitored by thin layer chromatography (TLC). After completion of the reaction, the mixture was cooled to room temperature. The 2-imino-thiazolidin-4-one hydrochloride (pseudothioglycolide hydrochloride) was isolated by filtration. The hydrochloride was dissolved in water, neutralized with sodium acetate solution and 2-imino-4-thiazolidinone (IV) was precipitated after cooling. The product was collected by filtration and dried at 60 °C. Yield: 86%; melting point: 254-259 °C.

References

[1] Patent: CN105884712, 2016, A. Location in patent: Paragraph 0069; 0070; 0071
[2] Patent: CN104059060, 2017, B. Location in patent: Paragraph 0058; 0059; 0060
[3] Patent: WO2010/82212, 2010, A2. Location in patent: Page/Page column 28
[4] Patent: WO2017/176812, 2017, A1. Location in patent: Paragraph 0511
[5] Bioorganic and Medicinal Chemistry Letters, 2011, vol. 21, # 22, p. 6739 - 6745

Pseudothiohydantoin Preparation Products And Raw materials

Raw materials

Ethyl chloroacetate Thiourea Carbamimidothioic acid Sodium acetate

Preparation Products

2-(3-(2-amino-2-methylpropyl)phenyl)-N-((4'-hydroxy-[1,1'-biphenyl]-3-yl)methyl)acetamide Mirin MRN-ATM Pathway Inhibitor, Mirin

Pseudothiohydantoin Suppliers

Global Suppliers ( 175)

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Boyle Chemical Co., Ltd.	021-50182298 021-50180596	sales@boylechem.com	China	2202	55
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
ShangHai DEMO Chemical Co.,Ltd	400-021-7337 2355568890	sales@demochem.com	China	2569	57
Beijing HwrkChemical Technology Co., Ltd	89508211 18501085097	sales.bj@hwrkchemical.com	China	9407	55
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
Pure Chemistry Scientific Inc.	001-857-928-2050 or 1-888-588-9418	sales@chemreagents.com	United States	10174	62
Tetranov Biopharm	13526569071	sales@leadmedpharm.com	China	7881	64
Adamas Reagent, Ltd.	400-6009262 15618770481	yhx@titansci.com	China	14098	59
Accela ChemBio Co.,Ltd.	021-50795510 4000665055	marketing@accelachem.com	China	10972	64

Supplier	Advantage
Shanghai Boyle Chemical Co., Ltd.	55
J & K SCIENTIFIC LTD.	76
Alfa Aesar	84
ShangHai DEMO Chemical Co.,Ltd	57
Beijing HwrkChemical Technology Co., Ltd	55
Energy Chemical	61
Pure Chemistry Scientific Inc.	62
Tetranov Biopharm	64
Adamas Reagent, Ltd.	59
Accela ChemBio Co.,Ltd.	64

View Latest Price from Pseudothiohydantoin manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-02-02	Pseudothiohydantoin 556-90-1		5mg	99%HPLC	2000tons	Shaanxi Dideu Medichem Co. Ltd
2019-12-26	Pseudothiohydantoin 556-90-1	$1.00	1KG	99%	1000KGS	Career Henan Chemical Co
2019-11-08	Pseudothiohydantoin 556-90-1		1g	99.5%min	20kg/week	Nanjing jinheyou Trading Co., Ltd.

Pseudothiohydantoin
556-90-1
99%HPLC
Shaanxi Dideu Medichem Co. Ltd

Pseudothiohydantoin
556-90-1
$1.00
99%
Career Henan Chemical Co

Pseudothiohydantoin
556-90-1
$0.00
99.5%min
Nanjing jinheyou Trading Co., Ltd.

Pseudothiohydantoin Spectrum

Pseudothiohydantoin(556-90-1)MS Pseudothiohydantoin(556-90-1)¹HNMR Pseudothiohydantoin(556-90-1)¹³CNMR Pseudothiohydantoin(556-90-1)IR1 Pseudothiohydantoin(556-90-1)IR2 Pseudothiohydantoin(556-90-1)Raman

556-90-1 (Pseudothiohydantoin) Related Search:

Dimethyl thiophene-2,3-dicarboxylate Thiazolyl Blue 2,5-Bis-Thiopheneboronic acid pinacol ester 2-Isocyanatothiazole Thiazole-4-carboxaldehyde

Thiazolo[5,4-c]pyridine-2-thiol Thiazole-5-carboxylic acid Thiazole Thiophene-2-thiocarboxamide Thieno[3,2-b]pyridine

Pseudothiohydantoin 2-Amino-4,5-dihydro-1,3-thiazol-4-one hydrochloride 2-(2-amino-4-oxo-1,3-thiazol-5-yl)acetic acid 2-p-Tolylamino-thiazol-4-one 2-m-Tolylamino-thiazol-4-one

2-Amino-5-fluoro-5-(trifluoromethyl)-4,5-dihydro-1,3-thiazol-4-one RARECHEM AL FC 0006 2-Phenylamino-thiazol-4-one

1of4

2-amino-4(5h)-thiazolon 2-Imino-1,3-thiazolidin-4-one 2-Imino-2-thiazolin-4-one 2-imino-4-thiazolidinon 2-imino-4-thiazolidinone 2-Imino-4-thiazolidone 2-Thiazolin-4-one, 2-imino- 4-Thiazolidinone, 2-imino- -Amino-thiazol-4-one USAF be-4-5 USAF dm-1 usafbe-4-5 usafdm-1 PSEUDOTHIOHYDANTOIN TIMTEC-BB SBB004297 2-imino-1,3-thiazol-4-one 5324-10-7 AIDS159806 AIDS-159806 EINECS 209-145-6 NSC 2858 NSC 45956 NSC45956 SBB004297 ST5104327 ZINC01641186 ZINC03860694 BUTTPARK 148\07-35 AURORA 16732 2-AMINO-4(5H)-THIAZOLONE Pseudothiohydantoin,97% 2-IMINO-THIAZOLIDIN-4-ONE 2-AMINO-1,3-THIAZOLIN-4-ONE 2-AMINO-4,5-DIHYDRO-1,3-THIAZOL-4-ONE 2-AMINO-4,5-DIHYDRO-1,3-THIAZOL-4-ONE HYDROCHLORIDE 2-AMINOTHIAZOLINONE HCL 2-AMINOTHIAZOLE-4-ONE HYDROCHLORIDE Pseudothiohydantoin ,98% 2-Iminothiazolidine-4-one 2-AMINO-4-OXO-THIAZOLE 2-aMinothiazol-4-ol 3-thiazol-4-one hydrochloride 5-dihydro-1 Pseudothiohydantion 2-amino-1,3-thiazol-4(5H)-one 2-amino-1,3-thiazol-4-one 2-amino-4-thiazolone 2-Thiazolin-4-one, 2-amino- 2-AMinothiazol-4-one 4(5H)-Thiaz 2-Amino-4,5-dihydrothiazol-4-one 2-aminothiazol-4(5H)-one 4(5H)-Thiazolone, 2-imino- 556-90-1 C3H4NOSHCl Building Blocks Thiazolines/Thiazolidines Heterocyclic Building Blocks