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BuyersGuideChem provides a structured directory that breaks down chemical products into their functional components and specialized groups, helping users navigate complex chemical substance groups and find relevant suppliers. The platform offers a deep categorization of over 700,000 products, including details like CAS numbers and structural classes for professional search depth.

Alkyl / Aliphatic chains

Alkyl or aliphatic chains form the structural backbone of many organic compounds and consist exclusively of carbon (C) and hydrogen (H) atoms arranged in open, straight, or branched chains. Unlike aromatic compounds, they do not contain ring structures with delocalized electrons. Chemically, they are mostly saturated (alkanes) or unsaturated (alkenes/alkynes) hydrocarbons, which are considered hydrophobic (water-repellent) and lipophilic (fat-soluble). Alkyl groups, often simplified as "R" in structural formulas, are formed when a hydrogen atom is removed from an alkane to form a bond with another part of the molecule. Due to their stability and nonpolarity, these chains play a central role in organic chemistry, for example, as components of surfactants, fats, oils, or as functional side groups in polymers.
allyl | amyl | butan | butane | butanediol | butanoyl | buten | butene | butenyl | butyl | butyryl | cyclohexa | cyclohexadien | cyclohexan | cyclohexyl | cyclopent | cyclopentadienyl | cyclopentene | cyclopentyl | cyclopropyl | decan | decane | decyl | diallyl | dibutyl | diisopropyl | dipropyl | dodecyl | enoate | enoic | ethan | ethane | ethanediyl | ethyl | heptan | heptane | heptyl | hexadecyl | hexan | hexane | hexanoate | hexanoic | hexen | hexyl | isobutyl | isopropoxy | isopropyl | methane | methano | methyl | nonan | nonane | nonyl | octadecyl | octan | octane | octyl | pent | pentan | pentane | pentene | pentyl | prop | propan | propane | propen | propene | propenyl | propionyl | propyl | propylcyclohexyl | styryl | tetradecyl | tridecyl | undecyl | vinyl | ylethyl

Halogen

The halogens are the “salt formers” of the periodic table (7th main group) and include fluorine, chlorine, bromine, iodine, and astatine. Due to their seven outer electrons, they are extremely reactive and occur in nature only in bound form as salts. They are the only group of elements that includes gaseous (fluorine, chlorine), liquid (bromine), and solid (iodine) representatives at room temperature. They are indispensable in technology and medicine—for example, for disinfection, for plastics such as Teflon, or as important components of medications.
bromide | bromo | bromoacetyl | bromobenzo | bromopyridin | chloride | chloro | chloroaniline | chlorobenzo | chlorobenzoate | chlorobenzoic | chloroimidazo | chloropropyl | chloropyridin | chlorotrityl | cyanide | dichloride | diiodo | fluoride | fluoro | hydrobromide | iodide | iodo | iodopyridin | tetrachloro | thiocyanate | tribromo | trichloro

Alcohol / Hydroxy / Diol / Polyol

Terms that describe the chemical class of alcohols and their functional building blocks. An alcohol is defined by at least one hydroxyl group (-OH) bonded to a carbon skeleton. Depending on the number of these groups, a distinction is made between simple alcohols such as ethanol or methanol, diols (or glycols) with two groups, and polyols such as glycerol or inositol, which have three or more bonding sites. These structural features largely determine the solubility and reactivity of the molecules, which range from simple solvents to complex sugar alcohols.
alcohol | butanol | cyclohexanol | cyclopentanol | ethanediol | ethanol | glucitol | glycero | glycerol | glycidyl | glycol | hydrate | hydroxide | hydroxy | inositol | methanol | monohydro | pentaerythritol | pentanol | propanediol | propanol | triol | yloxy

Amine / Nitrogen bases / Amino acids

Nitrogen-containing compounds ranging from simple organic bases to the central building blocks of life. Amines are derivatives of ammonia and function as organic nitrogen bases, playing a fundamental role in chemical synthesis and natural product chemistry. Amino acids form a special subgroup, which, in addition to the amino group, have an acid function and serve as fundamental units for the construction of proteins. Whether as simple alkylamines, complex heterocyclic bases such as adenine, or proteinogenic building blocks, they are all characterized by the reactive nitrogen atom, which significantly determines their chemical and biological properties.
adenine | alanine | amine | amino | ammonio | ammonium | anilino | arginine | asparagine | aspartic | benzenamine | butylamine | cyclohexylamine | cysteine | diamine | ethanamine | ethanediamine | glutamic | glutamine | glycyl | guanidine | histidine | hydrazide | hydrazine | hydrazino | hydrazinyl | hydrazone | imine | leucine | leucyl | lysine | methanamine | ornithine | piperidinamine | prolyl | propanamine | propylamine | pyridinamine | serine | triamine | tryptophan | tyrosine | valine | valyl | ylamine

Amide / Carbamate / Urea / Isocyanate

Nitrogen-containing carbon compounds that are closely related to each other due to their characteristic carbonyl-nitrogen bonds. Amides form the basis and are created by linking carboxylic acids with amines, while carbamates, as esters of carbamic acid, form a structural bridge between amides and esters. Urea and its derivatives, such as thiourea, are diamides of carbonic acid, which serve as central building blocks in biochemistry and fertilizer production. This group is complemented by highly reactive isocyanates, which act as important precursors for polymers and play a key role in chemical synthesis due to their specific nitrogen-carbon-oxygen arrangement.
acetamide | acetamidine | acetamido | acrylamide | amide | benzamidine | benzamido | butanamide | butyramide | carbamate | carbamic | carbamoyl | carbohydrazide | carboxamide | carboxamido | formamide | isocyanate | isocyanato | maleimide | pentanamide | phthalimide | propanamide | propionamide | succinimide | sulfamoyl | sulfonamide | thiourea | urea | ureido | ylcarbamate

Acid / Ester / Salt / Carbonate

Group of organic and inorganic acids and their chemical derivatives. While acids form the chemical basis as proton donors, their reaction with alcohols produces esters, which often have an aromatic scent. When acids are neutralized with bases or react with metals, salts are formed—such as carbonates, acetates, or sulfates—which are usually crystalline solids. These compounds range from simple metabolic products and preservatives to essential mineral building blocks, which derive their specific solubility and reactivity from their respective acid-base structure.
acetate | acetic | acid | acids | acrylate | acrylic | benzoate | benzoic | borate | butanoate | butanoic | butyrate | calcium | carbonate | carboxylate | cinnamate | citrate | diacetate | disodium | ester | esters | formate | fumarate | lactate | maleate | malonate | methacrylate | naphthoic | nicotinate | nicotinic | nitrate | oate | octanoate | oleate | oxalate | palmitate | pentanoic | phosphate | phosphoric | phthalate | potassium | propanoate | propanoic | propionate | propionic | salicylate | salt | salts | sodium | stearate | succinate | sulfate | tartrate | trisodium | valerate

Carbonyl / Aldehyde / Ketone

Organic compounds characterized by the highly reactive carbonyl group (a carbon-oxygen double bond). In aldehydes such as formaldehyde or benzaldehyde, this group is located at the end of a carbon chain, while in ketones such as acetone or benzophenone, it is located inside the molecule. These structural features largely determine the chemical properties and odor of many substances that are indispensable as important solvents, fragrances, or reactive intermediates such as anhydrides and lactones in synthetic chemistry.
acetaldehyde | acetone | acetophenone | aldehyde | anhydride | benzaldehyde | benzophenone | butanone | carbaldehyde | carbonyl | carboxaldehyde | cyclohexanone | dione | dioxide | dioxo | dioxoanthracene | ethanone | formaldehyde | formyl | indanone | ketone | lactone | methanone | oxobutyl | oxopropyl | phenone | propanal | propanone | propionaldehyde | propiophenone | pyridinone | thione | trione | trioxo

Ether / Oxide

Organic compounds whose structure is characterized by oxygen bridges between atoms. The group of ethers, which also includes functional units such as methoxy or ethoxy groups, is characterized by the linking of two carbon residues via a central oxygen atom. Oxides such as highly reactive epoxy compounds (oxirane) or cyclic representatives such as dioxane and tetrahydrofuran expand this spectrum to include ring-shaped structures. Whether as stable solvents, protective siloxanes, or complex acetals, this class of substances is crucial for controlling chemical stability and reactivity in modern synthetic chemistry.
acetal | acetoxy | acetyloxy | benzodioxin | benzodioxole | dioxa | dioxan | dioxane | dioxaspiro | dioxido | dioxin | dioxine | dioxol | dioxolan | dioxolane | dioxole | dioxolo | dioxy | disiloxane | epoxy | ether | ethoxy | methoxy | oxan | oxane | oxazolidin | oxazolidine | oxazolidinone | oxetan | oxetane | oxide | oxiran | oxirane | oxolan | propoxy | siloxane | siloxy | tetrahydrofuran

Sulfur

The diverse chemistry of sulfur compounds, ranging from simple functional groups to complex ring structures. The central element sulfur occurs in various oxidation states, for example in thiols and sulfides or in highly oxidized forms such as sulfones and sulfonic acids. In addition to linear substituents such as methylthio or sulfonyl groups, this group also includes sulfur-containing heterocycles such as thiophenes and thiazoles, which serve as essential building blocks in pharmaceutical chemistry and materials research.
benzothiazol | benzothiazole | benzothiophene | carbothioamide | ethylthio | methylthio | sulfanyl | sulfide | sulfinyl | sulfo | sulfonate | sulfonato | sulfone | sulfonic | sulfonyl | sulfooxy | sulfopropyl | sulfoxide | thia | thiadiazol | thiadiazole | thiazol | thiazole | thiazolidine | thien | thieno | thio | thiol | thiophen | thiophene | thiopyran | thioxo | ylthio

Phosphorus

The diverse chemistry of phosphorus and its key bonding forms in organic and inorganic synthesis. The group covers the entire spectrum from reduced phosphines to reactive intermediates such as phosphoramidites to biologically essential phosphates (mono-, di-, and triphosphates). Whether as stable phosphonates for technical applications or as highly reactive phosphonium salts and phosphoryl compounds, these substances act as crucial energy carriers, bridge building blocks, and catalysts in biochemistry and modern drug research.
diphosphate | monophosphate | phosphine | phosphino | phosphite | phospho | phosphonate | phosphonic | phosphonium | phosphono | phosphoramidite | phosphoryl | triphosphate

Element / Ion

A selection of metallic and semimetallic elements that occur in chemistry both in their neutral form and as charged ions. The list ranges from light main group elements such as lithium and magnesium to heavy transition metals and precious metals such as platinum, palladium, and iridium. In chemical compounds, these elements usually occur as positively charged cations, which act as central building blocks in catalysis, materials science, or as essential cofactors in biological systems.
aluminum | barium | bismuth | boron | cadmium | cerium | chromium | cobalt | copper | iridium | iron | lead | lithium | magnesium | manganese | mercury | nickel | palladium | platinum | ruthenium | silver | strontium | tin | titanium | yttrium | zinc | zirconium

Aromatic / Benzene / Phenyl systems

This category includes aromatic compound classes and functional groups that are based on or structurally related to the stable benzene system. The spectrum ranges from simple monocyclic compounds such as toluene and phenol to condensed polycyclic aromatics such as naphthalene and anthracene to complex heterocycles such as indole or carbazole. The list includes isolated hydrocarbons as well as their oxygen- and nitrogen-containing derivatives and specific residues such as the phenyl or benzyl group, which serve as fundamental building blocks in organic synthesis and drug chemistry.
anisole | anthracene | anthraquinone | anthryl | benz | benzamide | benzene | benzimidazole | benzo | benzofuran | benzopyran | benzoyl | benzyl | carbazol | carbazole | chroman | chromen | coumarin | cresol | dibenzo | flavone | fluorene | fluorescein | indan | inden | indene | indol | indole | naphthalen | naphthalene | naphthalenyl | naphtho | naphthol | naphthyl | phenanthren | phenanthrene | phenol | phenoxy | phenyl | phenylene | pyrene | stilbene | styrene | toluene | tolyl | xanthene | xylene

Heterocycles (N/O/S rings)

This selection covers a broad spectrum of heterocycles whose ring structures contain one or more heteroatoms such as nitrogen, oxygen, or sulfur in addition to carbon. The compilation ranges from saturated three-membered rings such as aziridine to classic five- and six-membered heteroaromatics such as furan, pyridine, and imidazole to complex bicyclic and spirocyclic systems. As essential framework structures in pharmaceutical chemistry and natural product synthesis, these components—from piperidine derivatives to condensed systems such as quinoline or purine—form the basis for specific chemical reactivities and biological profiles.
azaindole | azepane | azepin | azepine | azetidin | aziridine | benzimidazol | benzodioxol | benzotriazol | benzotriazole | benzoxazin | benzoxazine | benzoxazole | diazaspiro | diazepane | diazepin | diazepine | furan | furanyl | furo | furyl | imidazo | imidazol | imidazole | imidazolidin | imidazolidine | imidazolium | indazol | indoline | indolo | isoindol | isoindole | isoindoline | isoquinolin | isoquinolinyl | isoxazol | isoxazole | morpholino | morpholinyl | naphthyridin | naphthyridine | oxadiazol | oxazin | oxazine | oxazol | oxazole | oxazolo | piperazin | piperazine | piperazinyl | piperidin | piperidine | piperidinyl | purin | purine | pyran | pyrazin | pyrazol | pyrazole | pyrazolo | pyridazine | pyridin | pyridine | pyridinyl | pyrido | pyridyl | pyrimidinyl | pyrrol | pyrrole | pyrrolidin | pyrrolidine | pyrrolidinone | pyrrolidinyl | quinazolin | quinazoline | quinazolinone | quinazolinyl | quinolin | quinoline | quinolinol | quinolinone | quinolinyl | quinoxaline | tetrazol | tetrazole | triazin | triazine | triazol | triazole | triazolo

Protecting groups / Reagents

This section lists essential tools for modern synthetic chemistry, with a focus on protective groups and specialized reagents for organic transformation. The list includes classic protective strategies such as the base-labile Fmoc system, acid-labile groups such as trityl or t-butyl (otbu), and various silylethers. The selection is complemented by key components for coupling reactions, in particular boronic acid derivatives and pinacol esters, which serve as fundamental building blocks for the formation of carbon bonds.
boronic | dioxaborolan | dioxaborolane | fluoren | fluorenyl | fmoc | obzl | otbu | pinacol | silyl | trityl | wang

Polymer / Material

This section covers key terms and materials from polymer chemistry that form the basis for macromolecular structures and functional surfaces. The selection ranges from general polymers and copolymers to specific resins such as Tentagel, which is established in solid-phase synthesis. The list is supplemented by industrial additives such as pigments, which provide color properties and stability in polymer composites.
copolymer | pigment | poly | polymer | polymers | resin | tentagel

Biomolecules / Bio related

This compilation brings together key biomolecules and biological reference systems that are fundamental to biochemistry and medical research. The spectrum includes essential nucleosides such as adenosine and guanosine, structural proteins and peptides, and complex classes of active substances such as hormones, prostaglandins, and vitamins (e.g., biotin). The selection is supplemented by important metabolites, carbohydrates such as glucose, and references to biological sources and model organisms that serve as substrates or objects of study in biotechnological processes.
adenosine | amyloid | biotin | cholesterol | cytidine | estradiol | frog | glucopyranoside | glucopyranosyl | glucose | glucuronide | guanosine | hemoglobin | hormone | metabolite | mouse | peptide | plants | porcine | prostaglandin | protein | substrate | uridine | vitamin | water

Technical / Other / Non-chemical

This final category brings together technical terms, physical states, and general descriptors that go beyond purely chemical nomenclature. It includes process-relevant terms such as solution, mixture, or extract, describes material properties such as powder or colors, and lists organizational and regulatory terms such as pharmaceutical or impurity. This section thus serves to systematically record contextual factors that are essential for the handling, documentation, and biological origin of chemical substances.
amphibians | animals | blue | complex | extract | impurity | mesh | mixture | pharma | powder | reaction | ring | solution | substance | yellow

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