Molekula
5-Cyanothiophene-2-boronic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
5-Cyanothiophene-2-boronic acid is a boronic acid derivative used in cross-coupling reactions, particularly in the synthesis of pharmaceuticals and functional materials. It is a white to off-white solid with a molecular formula of C5H4BNO2S and a molecular weight of 152.96 g/mol. It is stable at ambient temperature and should be stored under normal conditions. The substance is classified as a warning hazard. Molekula supplies 5-Cyanothiophene-2-boronic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 27885742 |
| CAS Number | 305832-67-1 |
| IUPAC Name | (5-cyanothiophen-2-yl)boronic acid |
| Molecular Formula | C5H4BNO2S |
| Molecular Weight | 152.96 |
| Exact Mass | 153.0056 |
| SMILES | B(C1=CC=C(S1)C#N)(O)O |
| InChIKey | ZEOMEPSYIIQIND-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H4BNO2S/c7-3-4-1-2-5(10-4)6(8)9/h1-2,8-9H |
| PubChem CID | 4198743 |
| UN Number | UN3439 |
| REACH Code | Y110 |
| HTS Code | 29349944 |
| Tariff Code | 2934999090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (5-cyano-2-thienyl)boronic acid
- (5-cyanothiophen-2-yl)boronic Acid
- 2-cyanothiophene-5-boronic acid
- 5-(dihydroxyboranyl)thiophene-2-carbonitrile
- 5-Cyanothiophene-2-boronicacid(contains varying amounts of Anhydride)
- Boronic acid, (5-cyano-2-thienyl)-
- Boronic acid, B-(5-cyano-2-thienyl)-
Frequently asked questions
What is 5-Cyanothiophene-2-boronic acid used for?
It is primarily used as a building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions for constructing complex molecules in pharmaceutical and agrochemical research.
What is the chemical formula and molecular weight?
The formula is C5H4BNO2S with a molecular weight of 152.96 g/mol.
How should 5-Cyanothiophene-2-boronic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available?
Available in high purity grade suitable for research and synthesis applications.
Can Molekula supply it in bulk?
Yes, Molekula can supply 5-Cyanothiophene-2-boronic acid in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.