2-Thiophenecarboxaldehyde

CAS 98-03-3C5H4OSChemical Synthesis

2-Thiophenecarboxaldehyde (CAS: 98-03-3, C5H4OS) is a heterocyclic aldehyde. With a molecular weight of 112.15 g/mol, it serves as a versatile building block in organic synthesis. This compound is recognised for its role in the preparation of various fine chemicals and pharmaceutical intermediates, contributing to advancements in medicinal chemistry and materials science.

IUPAC: Thenaldehyde

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2-Thiophenecarboxaldehyde (C5H4OS) — chemical structure, CAS 98-03-3; Chemistry, fine chemical supplied by Tech Serve Solutions

AldehydesBuilding BlocksC1 to C6C4 to C6Carbonyl CompoundsChemical SynthesisHeterocyclic Building BlocksOrganic Building Blocks

01 /Applications

Organic Synthesis Intermediate

2-Thiophenecarboxaldehyde is a key intermediate in the synthesis of more complex organic molecules. Its aldehyde functionality allows for a range of reactions, including condensations and additions, making it valuable in multi-step syntheses.

Pharmaceutical Precursor

This thiophene derivative is employed in the development of pharmaceutical agents. It acts as a structural motif or reactive component in the synthesis pathways of various drug candidates.

Heterocyclic Chemistry Building Block

As a thiophene-based compound, it is essential for constructing diverse heterocyclic systems. These systems are prevalent in agrochemicals, dyes, and advanced materials.

02 /Properties

Molecular weight	112.15
Empirical formula	C5H4OS
Assay	98%
Boiling point	198 °C(lit.)75-77 °C/11 mmHg(lit.)
Density	1.2 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.591(lit.)
Storage temperature	2-8°C

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	77 °C / 170.6 °F
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	22-36/37/38
Safety statements (S)	36/37/39

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

98-03-3

MDL number

MFCD00005429

PubChem substance

24900117

Beilstein registry

105819

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 2-Thiophenecarboxaldehyde used for?

2-Thiophenecarboxaldehyde is primarily used as a building block and intermediate in organic synthesis, particularly for creating complex heterocyclic compounds and pharmaceutical precursors.

What are the CAS number and formula for 2-Thiophenecarboxaldehyde?

The CAS number is 98-03-3 and the molecular formula is C5H4OS.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 2-Thiophenecarboxaldehyde with an assay of 98%. This product is not represented as USP, BP, or EP grade.

How should 2-Thiophenecarboxaldehyde be handled safely?

Handle with appropriate personal protective equipment including eyeshields, faceshields, and gloves. Ensure adequate ventilation and use approved respiratory protection as indicated by GHS hazards (H302, H315, H319, H335).