2-aminothiazol-4(5H)-one - ≥98% , CAS No.556-90-1

CAS: 556-90-1 Cat. No.: A193919 Molecular Weight: 116.14 EC Number: 209-145-6
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
2-aminothiazol-4(5H)-one | 4, 5-Imidazolidinedithione | STK078756 | USAF BE-4-5 | 2-amino-1,3-thiazol-4(5H)-one | 2-Imino-1,3-thiazolidin-4-one | STK159520 | AB00443393-03 | NSC2858 | NSC-2858 | SR-01000945159-1 | 2-AMINO-4,5-DIHYDRO-1,3-THIAZOL-4-ONE | 2
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
A193919-250mg
3
$9.90
1g
A193919-1g
3
$10.90
5g
A193919-5g
2
$11.90
25g
A193919-25g
3

$25.90

$38.90
Save $13.00 (33.42%)
100g
A193919-100g
1

$73.90

$110.90
Save $37.00 (33.36%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
2-aminothiazol-4(5H)-one | 4, 5-Imidazolidinedithione | STK078756 | USAF BE-4-5 | 2-amino-1, 3-thiazol-4(5H)-one | 2-Imino-1, 3-thiazolidin-4-one | STK159520 | AB00443393-03 | NSC2858 | NSC-2858 | SR-01000945159-1 | 2-AMINO-4, 5-DIHYDRO-1, 3-THIAZOL-4-ONE | 2
Specifications & Purity
≥98%
Storage
Room temperature
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Pubchem Sid504752072
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504752072
Canonical SmilesC1C(=O)N=C(S1)N
IUPAC Name2-amino-1,3-thiazol-4-one
InChIKeyHYMJHROUVPWYNQ-UHFFFAOYSA-N
INCHI1S/C3H4N2OS/c4-3-5-2(6)1-7-3/h1H2,(H2,4,5,6)
Isomeric SMILES C1C(=O)N=C(S1)N
WGK Germany 3
RTECS XJ6276000
Molecular Weight 116.14
Reaxy-Rn 2255
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2255&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzolines
SubclassThiazolines
Intermediate Tree Nodes Not available
Direct ParentThiazolines
Alternative Parents N-acylimines  Isothioureas  Propargyl-type 1,3-dipolar organic compounds  Carboxylic acids and derivatives  Carboximidamides  Azacyclic compounds  Organopnictogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Meta-thiazoline - Isothiourea - N-acylimine - Carboxylic acid derivative - Carboximidamide - Azacycle - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Carbonyl group - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Organooxygen compound - Organonitrogen compound - Organic oxygen compound - Organic nitrogen compound - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as thiazolines. These are heterocyclic compounds containing a five-member unsaturated aliphatic ring with one nitrogen atom, one sulfur atom, three carbon atoms.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot NumberCertificate TypeDateItem
E2621202Certificate of AnalysisMay 25, 2026 A193919
E1905036Certificate of AnalysisFeb 08, 2023 A193919
L2209206Certificate of AnalysisDec 27, 2022 A193919
L2208681Certificate of AnalysisDec 14, 2022 A193919
Chemical and Physical Properties
Molecular Weight116.140 g/mol
XLogP3-0.300
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass116.004 Da
Monoisotopic Mass116.004 Da
Topological Polar Surface Area80.800 Ų
Heavy Atom Count7
Formal Charge0
Complexity131.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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