Chemical Products

2,3,5,6-Tetrafluoroterephthalic Acid (CAS: 652-36-8) is a fluorinated dicarboxylic acid supplied as a white crystalline powder. The four ring fluorines lower polarizability and increase chemical and thermal resistance while the two para carboxyl groups allow polycondensation, so the compound behaves as a fluorinated analogue of terephthalic acid. Commercial assay is 98% with controlled inorganic content, and

Diketene (CAS: 674-82-8) is a cyclic dimer of ketene supplied as a colourless clear, mobile liquid with a sharp, irritating odour. The strained four-membered lactone ring opens readily with nucleophiles, so the molecule acts as an acetoacetylating agent and as a convenient, transportable source of ketene chemistry for building acetoacetamides, pyrazolones and heterocycles. Commercial material

N-Methyl-p-toluidine (CAS: 623-08-5) is a secondary aromatic amine supplied as a colourless to pale yellow clear liquid that darkens gradually on exposure to light and air. The N-methyl group increases basicity and reactivity in electrophilic substitution, so the ring is readily nitrosated, sulfonated or coupled, while the para methyl group blocks one position and directs

Ethyl 3-Aminocrotonate (CAS: 626-34-6) is an enamine ester supplied as a pale yellow clear liquid that may solidify at low temperature. The molecule combines a nucleophilic amino group with an electrophilic ester on an activated double bond, so it undergoes condensation with carbonyls, amidines and hydrazines to close five- and six-membered nitrogen heterocycles in a

1-Bromoheptane (CAS: 629-04-9) is a straight-chain primary alkyl bromide supplied as a colourless clear liquid with a faint, characteristic odour. The primary bromide is an efficient substrate for SN2 displacement, so it is used to attach a linear seven-carbon chain to amines, phenols, thiols, carboxylates and heterocyclic nitrogens. Commercial assay is 99% with low free

Pivalonitrile (CAS: 630-18-2) is a branched aliphatic nitrile supplied as a colourless clear liquid with a mild, ethereal odour. The bulky tert-butyl group shields the nitrile carbon, so the compound is a useful source of the tert-butyl motif and can be hydrolysed to pivalamide, reduced to neopentylamine derivatives or used as a polar aprotic co-solvent.

4-Nitrobenzoic Acid (CAS: 62-23-7) is an aromatic carboxylic acid supplied as a white to pale yellow crystalline powder. The para-nitro group withdraws electron density, which activates the ring towards nucleophilic substitution and strengthens the acidity of the carboxyl group, so the compound is a useful substrate for reduction to 4-aminobenzoic acid and for esterification studies.

3-Methylbenzaldehyde (CAS: 620-23-5) is an aromatic aldehyde carrying a methyl group at the meta position, supplied as a colourless to pale yellow clear liquid with a sweet, almond-like odour. The aldehyde group is reactive towards condensation, reductive amination and oxidation, while the meta methyl group directs further substitution and slightly modifies the odour profile compared

N-Hydroxysuccinimide (CAS: 6066-82-6) is a hydroxylamine-derived imide supplied as a white crystalline powder, slightly hygroscopic. Its N-hydroxyl group reacts with carbodiimides and carboxylic acids to form stable, amine-reactive succinimidyl esters, making it one of the standard reagents for amide and peptide bond formation and for labelling biomolecules.

4-Formylbenzoic Acid (CAS: 619-66-9) is a bifunctional aromatic compound supplied as a white to off-white crystalline powder. It carries both an aldehyde and a carboxylic acid on the same benzene ring, so each group can be functionalised independently: the aldehyde undergoes condensation, reductive amination and imine formation, while the acid provides salts, esters and amides.

3-Methyl-2-nitrobenzoic Acid (CAS: 5437-38-7) is a substituted aromatic acid supplied as a white to pale yellow crystalline powder. The adjacent nitro and methyl groups create a sterically demanding, electron-poor ring: the carboxylic acid can be converted to amides, esters or acid chlorides, while the nitro group can be reduced to an aniline for further cyclisation

Benzyltrimethylammonium Chloride (CAS: 56-93-9) is a quaternary ammonium salt most commonly supplied as a 60% aqueous solution, a colourless to pale yellow clear liquid. The benzyltrimethylammonium cation is a strong organic base and an effective phase transfer catalyst, carrying hydroxide, halide or carboxylate anions into organic phases and accelerating alkylations, esterifications and condensations.