Molecular formula
C18H22N6O2
98 compounds have this formula on CompoundList.
- Molar mass
- 354.41g/mol
- Monoisotopic mass
- 354.1804Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 11
The formula C18H22N6O2 describes a molecule made of 18 carbon atoms, 22 hydrogen atoms, 6 nitrogen atoms and 2 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1861.00%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 226.26%1.008 × 22 = 22.176 g/mol
- N Nitrogen × 623.71%14.007 × 6 = 84.042 g/mol
- O Oxygen × 29.03%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C18H22N6O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 98 of 98 compounds
7-Benzyl-1,3-dimethyl-8-piperazin-1-yl-3,7-dihydropurine-2,6-dione
CAS 389060-02-0C18H22N6O2
3-Methyl-7-(4-methylbenzyl)-8-(1-piperazinyl)-3,7-dihydro-1H-purine-2,6-dione
CAS 332905-08-5C18H22N6O2
7-Benzyl-3-methyl-8-(4-methylpiperazin-1-yl)purine-2,6-dione
CAS 332103-57-8C18H22N6O2
Ethyl 5-amino-1,2-dihydro-3-((N-methylanilino)methyl)pyrido-(3,4-b)pyrazin-7-ylcarbamate
CAS 80434-77-1C18H22N6O2
![3-Methyl-8-{[4-benzylpiperazinyl]methyl}-1,3,7-trihydropurine-2,6-dione chemical structure, C18H22N6O2, CAS 839682-63-2](/s/UVLAIIXGKHCRKS-UHFFFAOYSA-N.svg)
3-Methyl-8-{[4-benzylpiperazinyl]methyl}-1,3,7-trihydropurine-2,6-dione
CAS 839682-63-2C18H22N6O2
![2-[2-(4-Amino-1,2,5-oxadiazol-3-yl)benzimidazol-1-yl]-1-(3,5-dimethylpiperidin-1-yl)ethanone chemical structure, C18H22N6O2, CAS 497836-05-2](/s/LPHVJHMBHQIMEH-UHFFFAOYSA-N.svg)
2-[2-(4-Amino-1,2,5-oxadiazol-3-yl)benzimidazol-1-yl]-1-(3,5-dimethylpiperidin-1-yl)ethanone
CAS 497836-05-2C18H22N6O2
1,3-Dimethyl-7-((4-phenylpiperazin-1-yl)methyl)-1H-purine-2,6(3H,7H)-dione
CAS 797028-09-2C18H22N6O2
1,3-Dimethyl-7-phenethyl-8-(2-(propan-2-ylidene)hydrazinyl)-1H-purine-2,6(3H,7H)-dione
CAS 476668-45-8C18H22N6O2
3-Methyl-7-(3-phenylpropyl)-8-(2-propan-2-ylidenehydrazinyl)purine-2,6-dione
CAS 303973-04-8C18H22N6O2
Vanin-1-IN-1
CAS 2173134-00-2C18H22N6O2
![2-{3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl}-6,7-dimethoxy-1-methyl-1,2,3,4-tetrahydroisoquinoline chemical structure, C18H22N6O2, CAS 899730-12-2](/s/ZAEYFAQIKWPNTN-UHFFFAOYSA-N.svg)
2-{3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl}-6,7-dimethoxy-1-methyl-1,2,3,4-tetrahydroisoquinoline
CAS 899730-12-2C18H22N6O2
(4-(6-(Pyridin-3-ylamino)pyridazin-3-yl)piperazin-1-yl)(tetrahydrofuran-2-yl)methanone
CAS 1226433-37-9C18H22N6O2
![2-[4-(Acetylamino)-1H-indol-1-yl]-N-[3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]acetamide chemical structure, C18H22N6O2, CAS 1574309-82-2](/s/YRYVNDOOUYXZMI-UHFFFAOYSA-N.svg)
2-[4-(Acetylamino)-1H-indol-1-yl]-N-[3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]acetamide
CAS 1574309-82-2C18H22N6O2
![2-(4-((1H-Benzo[d]imidazol-2-yl)methyl)piperazin-1-yl)-N-(5-methylisoxazol-3-yl)acetamide chemical structure, C18H22N6O2, CAS 1170629-16-9](/s/GSRZDCCAOKISNM-UHFFFAOYSA-N.svg)
2-(4-((1H-Benzo[d]imidazol-2-yl)methyl)piperazin-1-yl)-N-(5-methylisoxazol-3-yl)acetamide
CAS 1170629-16-9C18H22N6O2
8-(4-Benzylpiperazin-1-yl)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione
CAS 54119-58-3C18H22N6O2
![tert-Butyl N-{[3-({3-methyl-[1,2,4]triazolo[4,3-a]pyrazin-8-yl}amino)phenyl]methyl}carbamate chemical structure, C18H22N6O2, CAS 2148282-22-6](/s/IZCRCGCVZZYCCP-UHFFFAOYSA-N.svg)
tert-Butyl N-{[3-({3-methyl-[1,2,4]triazolo[4,3-a]pyrazin-8-yl}amino)phenyl]methyl}carbamate
CAS 2148282-22-6C18H22N6O2
![2-[(4,6-Dipyrrolidin-1-yl-1,3,5-triazin-2-yl)amino]benzoic acid chemical structure, C18H22N6O2, CAS 421580-99-6](/s/SOQONSYEZMRCAS-UHFFFAOYSA-N.svg)
2-[(4,6-Dipyrrolidin-1-yl-1,3,5-triazin-2-yl)amino]benzoic acid
CAS 421580-99-6C18H22N6O2
![3-Methyl-7-[(3-methylphenyl)methyl]-8-piperazin-1-ylpurine-2,6-dione chemical structure, C18H22N6O2, CAS 303973-23-1](/s/NCBQWTNHQFIYCS-UHFFFAOYSA-N.svg)
3-Methyl-7-[(3-methylphenyl)methyl]-8-piperazin-1-ylpurine-2,6-dione
CAS 303973-23-1C18H22N6O2
![3-[(4,6-Dipyrrolidin-1-yl-1,3,5-triazin-2-yl)amino]benzoic acid chemical structure, C18H22N6O2, CAS 421580-98-5](/s/JYMBLVQYYLEMDD-UHFFFAOYSA-N.svg)
3-[(4,6-Dipyrrolidin-1-yl-1,3,5-triazin-2-yl)amino]benzoic acid
CAS 421580-98-5C18H22N6O2
3-Methyl-7-(2-methylbenzyl)-8-(piperazin-1-yl)-1H-purine-2,6(3H,7H)-dione
CAS 878441-33-9C18H22N6O2
![(4-Ethoxyphenyl)(1-methyl-4-morpholin-4-ylpyrazolo[5,4-d]pyrimidin-6-yl)amine chemical structure, C18H22N6O2, CAS 897758-52-0](/s/FQZVEMPLUPEHCB-UHFFFAOYSA-N.svg)
(4-Ethoxyphenyl)(1-methyl-4-morpholin-4-ylpyrazolo[5,4-d]pyrimidin-6-yl)amine
CAS 897758-52-0C18H22N6O2
3-Methyl-7-phenethyl-8-(piperazin-1-yl)-1H-purine-2,6(3H,7H)-dione
CAS 886911-21-3C18H22N6O2
9H-Purine, 6-(4-(2-(o-methoxyphenoxy)ethyl)-1-piperazinyl)-
CAS 24926-58-7C18H22N6O2
![4-{[4,6-Di(pyrrolidin-1-yl)-1,3,5-triazin-2-yl]amino}benzoic acid chemical structure, C18H22N6O2, CAS 944644-34-2](/s/HNSRLBBWAXTAIE-UHFFFAOYSA-N.svg)
4-{[4,6-Di(pyrrolidin-1-yl)-1,3,5-triazin-2-yl]amino}benzoic acid
CAS 944644-34-2C18H22N6O2
- 8-[(2E)-2-Benzylidenehydrazinyl]-3-methyl-7-pentylpurine-2,6-dione300591-03-1C18H22N6O2
- N-((1-(3-Cyanopyrazin-2-yl)piperidin-4-yl)methyl)-2-(3,5-dimethylisoxazol-4-yl)acetamide1797726-25-0C18H22N6O2
- 2-Methyl-6-(4-(pyrimidin-2-yl)piperazine-1-carbonyl)-5,6,7,8-tetrahydrocinnolin-3(2H)-one2034412-90-1C18H22N6O2
- (Z)-7-Butyl-3-methyl-8-(2-(1-phenylethylidene)hydrazinyl)-1H-purine-2,6(3H,7H)-dione328117-78-8C18H22N6O2
- 1-((2E)but-2-enyl)-8-(3,5-dimethylpyrazolyl)-3-methyl-7-prop-2-enyl-1,3,7-trih ydropurine-2,6-dione1014030-82-0C18H22N6O2
- 1-Piperazinecarboxylic acid, 4-(1-methyl-4H-(1,2,4)triazolo(4,3-a)(1,5)benzodiazepin-5-yl)-, ethyl ester137731-18-1C18H22N6O2
- (E)-7-Isobutyl-3-methyl-8-(2-(1-phenylethylidene)hydrazinyl)-1H-purine-2,6(3H,7H)-dione331259-77-9C18H22N6O2
- 4-Methylbenzaldehyde (7-isobutyl-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)hydrazone682776-48-3C18H22N6O2
- 3-Methyl-1,7-bis(prop-2-enyl)-8-(3,4,5-trimethylpyrazol-1-yl)purine-2,6-dione1013992-61-4C18H22N6O2
- 3-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(pyridin-4-ylmethyl)propanamide953149-60-5C18H22N6O2
- 1-Methyl-N-{1-[2-(morpholin-4-yl)ethyl]-1H-benzimidazol-2-yl}-1H-pyrazole-5-carboxamide1005645-19-1C18H22N6O2
- 1,3-Dimethyl-8-[(E)-2-[(4-methylphenyl)methylidene]hydrazin-1-yl]-7-propyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione949399-56-8C18H22N6O2
- 2-(Benzo[d]isoxazol-3-yl)-N-(2-((6-(ethylamino)-2-methylpyrimidin-4-yl)amino)ethyl)acetamide1206999-14-5C18H22N6O2
- N-{2-[4-(Azepan-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]ethyl}furan-2-carboxamide1209227-80-4C18H22N6O2
- N-{2-Oxo-2-[(pyridin-4-ylmethyl)amino]ethyl}-4-(pyridin-2-yl)piperazine-1-carboxamide1374536-13-6C18H22N6O2
- N-[2-(Benzylamino)-2-oxoethyl]-4-(pyrimidin-2-yl)piperazine-1-carboxamide1351690-48-6C18H22N6O2
- N-{4-Oxo-4-[4-(2-pyridyl)piperazino]butyl}-2-pyrazinecarboxamide1374516-31-0C18H22N6O2
- N-{2-Oxo-2-[(pyridin-2-ylmethyl)amino]ethyl}-4-(pyridin-2-yl)piperazine-1-carboxamide1374546-50-5C18H22N6O2
- 3-(3,5-Dimethyl-1H-pyrazol-4-yl)-N-{4-[5-(methoxymethyl)-1H-1,2,4-triazol-3-yl]phenyl}propanamide1435903-90-4C18H22N6O2
- 3-(4-Methoxyphenyl)-1-methyl-N-[3-(2-methylpropyl)-1H-1,2,4-triazol-5-yl]-1H-pyrazole-5-carboxamide1574517-85-3C18H22N6O2
- (6-Morpholinopyridazin-3-yl)(4-(pyridin-2-yl)piperazin-1-yl)methanone1396792-47-4C18H22N6O2
- N-(2-(4-(Pyridin-2-yl)piperazin-1-yl)pyrimidin-5-yl)tetrahydrofuran-2-carboxamide1421509-35-4C18H22N6O2
- 3-(2-((1R,5S)-3-(1H-1,2,4-Triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl)-2-oxoethyl)-6-cyclopropylpyrimidin-4(3H)-one2310156-17-1C18H22N6O2
- Urea, 1,1'-vinylenebis(3-(2-(2-pyridyl)ethyl)-, (E)-25524-61-2C18H22N6O2
- 2-[3-(3,5-Dimethylphenyl)-7-oxotriazolo[4,5-d]pyrimidin-6-yl]-N,N-diethylacetamide887223-36-1C18H22N6O2
- 8-(3,5-Dimethyl-1H-pyrazol-1-yl)-3-methyl-7-(2-methylprop-2-en-1-yl)-1-(prop-2-en-1-yl)-2,3,6,7-tetrahydro-1H-purine-2,6-dione1014070-97-3C18H22N6O2
- 3-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(pyridin-2-ylmethyl)propanamide953240-44-3C18H22N6O2
- 7-Butyl-3-methyl-8-[(E)-2-[(4-methylphenyl)methylidene]hydrazin-1-yl]-2,3,6,7-tetrahydro-1H-purine-2,6-dione949428-88-0C18H22N6O2
- 4-(Cyclopropylamino)-2-(4-morpholin-4-ylanilino)pyrimidine-5-carboxamide1198302-04-3C18H22N6O2
- (4-(6-(Pyridin-2-ylamino)pyrimidin-4-yl)piperazin-1-yl)(tetrahydrofuran-2-yl)methanone1421485-38-2C18H22N6O2
- 3-((1-(3-(3,5-Dimethyl-1H-pyrazol-4-yl)propanoyl)piperidin-3-yl)oxy)pyrazine-2-carbonitrile2034204-42-5C18H22N6O2
- (4-(6-Morpholinopyridazin-4-yl)piperazin-1-yl)(pyridin-3-yl)methanone1798523-43-9C18H22N6O2
- 2-[2-(4-{5H,6H,7H-Cyclopenta[c]pyridazin-3-yl}piperazin-1-yl)-2-oxoethyl]-6-methyl-2,3-dihydropyridazin-3-one2034565-66-5C18H22N6O2
- 2-{1-Oxo-1-[4-(pyrimidin-2-yl)piperazin-1-yl]propan-2-yl}-2H,3H,5H,6H,7H-cyclopenta[c]pyridazin-3-one2034428-66-3C18H22N6O2
- (4-(6,7-Dihydro-5H-cyclopenta[c]pyridazin-3-yl)piperazin-1-yl)(6-ethoxypyridazin-3-yl)methanone2034227-68-2C18H22N6O2
- 6-Cyclopropyl-2-(2-(4-(6-methylpyridazin-3-yl)piperazin-1-yl)-2-oxoethyl)pyridazin-3(2H)-one2034425-42-6C18H22N6O2
- 6-Cyclopropyl-2-(2-(4-(5-methylpyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)pyridazin-3(2H)-one2034614-83-8C18H22N6O2
- 3-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(4-methylpyridin-2-yl)propanamide952971-05-0C18H22N6O2
- N1-[[3-Ethoxy-4-[(4-methylphenyl)methoxy]phenyl]methyl]-1H-tetrazole-1,5-diamine884990-93-6C18H22N6O2
- 6-Cyano-N-[[(2S,3S)-4-ethyl-3-(3-methylimidazol-4-yl)morpholin-2-yl]methyl]pyridine-3-carboxamide2223529-58-4C18H22N6O2
- 2-Cyano-N-[[(2S,3S)-4-ethyl-3-(2-methylpyrazol-3-yl)morpholin-2-yl]methyl]pyridine-4-carboxamide2223443-64-7C18H22N6O2
- 2-Cyano-N-[[(2S,3S)-4-ethyl-3-(1-methylimidazol-2-yl)morpholin-2-yl]methyl]pyridine-4-carboxamide2223510-31-2C18H22N6O2
- 3-(Furan-2-yl)-6-(4-{[3-(propan-2-yl)-1,2,4-oxadiazol-5-yl]methyl}piperazin-1-yl)pyridazine2380191-81-9C18H22N6O2
- N-({4-[4-(3-Methyl-1H-1,2,4-triazol-5-yl)piperazine-1-carbonyl]phenyl}methyl)prop-2-enamide2196261-00-2C18H22N6O2
- 4-[({2,3-Dimethylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]-1-(1H-pyrazole-4-carbonyl)piperidine2549042-63-7C18H22N6O2
- 2-({1-[(3-Methyl-1,2-oxazol-5-yl)methyl]piperidin-4-yl}oxy)-5-(1-methyl-1H-pyrazol-4-yl)pyrimidine2549007-84-1C18H22N6O2
- 2-({1-[(2-Methyl-1,3-oxazol-4-yl)methyl]piperidin-4-yl}oxy)-5-(1-methyl-1H-pyrazol-4-yl)pyrimidine2549056-34-8C18H22N6O2
- 8-(3,5-Dimethylpyrazol-1-yl)-3-methyl-1-(2-methylprop-2-enyl)-7-prop-2-enylpurine-2,6-dione1014030-74-0C18H22N6O2
- 2-[2-(3-Cyano-phenyl)-2H-tetrazol-5-yl]-piperidine-1-carboxylic acid tert-butyl ester956297-67-9C18H22N6O2
- 6-[4-(Dimethylamino)phenyl]-2-ethyl-4-methyl-7,8-dihydropurino[7,8-a]imidazole-1,3-dione923677-23-0C18H22N6O2
- N-{Cis-3-[5-(hydroxymethyl)-4-methyl-4H-1,2,4-triazol-3-yl]cyclobutyl}-2-(2-methyl-1H-benzimidazol-5-yl)acetamide2068754-15-2C18H22N6O2
- 1-{1-[4-(1H-1,2,4-Triazol-1-yl)butanoyl]piperidin-4-yl}-1,3-dihydro-2H-benzimidazol-2-one2176197-50-3C18H22N6O2
- 2-Cyano-N-{[(2S,3S)-4-ethyl-3-(1-methyl-1H-pyrazol-4-yl)morpholin-2-yl]methyl}pyridine-4-carboxamide2223275-13-4C18H22N6O2
- 4-(Oxan-4-yl)-6-[4-(pyrimidin-2-yl)piperazine-1-carbonyl]pyrimidine2415456-13-0C18H22N6O2
- N-{5-[4-(5-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridin-2-yl}cyclopropanecarboxamide2877668-41-0C18H22N6O2
- 6-[4-(2-Methoxyphenyl)piperazin-1-yl]-7,9-dimethyl-8,9-dihydro-7H-purin-8-one2877650-66-1C18H22N6O2
- 2-(Dimethylamino)-8-[(6-methylimidazo[1,2-a]pyridin-2-yl)carbonyl]-1,3,8-triazaspiro[4.5]dec-1-en-4-one2108977-61-1C18H22N6O2
- (1H-Benzo[d][1,2,3]triazol-6-yl)((3S,4R)-3-(hydroxymethyl)-4-(1-isopropyl-1H-pyrazol-4-yl)pyrrolidin-1-yl)methanone2027195-53-3C18H22N6O2
- 4-(2,3-Dihydro-2-oxo-1H-benzo[d]imidazol-1-yl)-N-[(1-methyl-1H-pyrazol-3-yl)methyl]piperidin-1-carboxamide1951228-94-6C18H22N6O2
- 1-(1-((6,8-Dihydro-5H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3-yl)methyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1951534-40-9C18H22N6O2
- 4-(2,3-Dihydro-2-oxo-1H-benzo[d]imidazol-1-yl)-N-[2-(1H-imidazol-1-yl)ethyl]piperidin-1-carboxamide2249097-65-0C18H22N6O2
- 1-[(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)methyl]-4-({imidazo[1,2-b]pyridazin-6-yloxy}methyl)piperidine2548982-40-5C18H22N6O2
- 1-(3,5-Dimethyl-1H-pyrazole-4-carbonyl)-4-({imidazo[1,2-b]pyridazin-6-yloxy}methyl)piperidine2548976-56-1C18H22N6O2
- 1-(1,5-Dimethyl-1H-pyrazole-3-carbonyl)-4-({imidazo[1,2-b]pyridazin-6-yloxy}methyl)piperidine2548987-43-3C18H22N6O2
- 5-Methoxy-2-{4-[({2-methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidin-1-yl}pyrimidine2549005-00-5C18H22N6O2
- 4-Methoxy-2-{4-[({2-methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidin-1-yl}pyrimidine2549005-88-9C18H22N6O2
- 1-(1-Methyl-1H-imidazole-5-carbonyl)-4-[({2-methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidine2548984-08-1C18H22N6O2
- 1-(1-Methyl-1H-pyrazole-5-carbonyl)-4-[({2-methylimidazo[1,2-b]pyridazin-6-yl}oxy)methyl]piperidine2549038-15-3C18H22N6O2
- 9-Ethyl-6-[4-(2-methoxyphenyl)piperazin-1-yl]-8,9-dihydro-7H-purin-8-one2742023-17-0C18H22N6O2
- 6-[4-(3-Methoxyphenyl)piperazin-1-yl]-7,9-dimethyl-8,9-dihydro-7H-purin-8-one2742046-56-4C18H22N6O2
- 9-Ethyl-6-[4-(3-methoxyphenyl)piperazin-1-yl]-8,9-dihydro-7H-purin-8-one2742038-21-5C18H22N6O2
- 3-Cyclopropyl-1-(1-{5-methylpyrazolo[1,5-a]pyrimidin-7-yl}piperidin-4-yl)imidazolidine-2,4-dione2770613-30-2C18H22N6O2
- N-{5-[4-(4-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridin-2-yl}cyclopropanecarboxamide2770617-72-4C18H22N6O2
- 5,6-Dimethyl-3-{2-[3-(6-methylpyrimidin-4-yl)-3,6-diazabicyclo[3.1.1]heptan-6-yl]-2-oxoethyl}-3,4-dihydropyrimidin-4-one3054538-98-3C18H22N6O2
Frequently asked questions
What is the molar mass of C18H22N6O2?
The molar mass of C18H22N6O2 is 354.41 g/mol, calculated from standard atomic weights for 18 carbon atoms, 22 hydrogen atoms, 6 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 354.1804 Da.
How many compounds have the formula C18H22N6O2?
CompoundList lists 98 compounds with the molecular formula C18H22N6O2, including 7-Benzyl-1,3-dimethyl-8-piperazin-1-yl-3,7-dihydropurine-2,6-dione, 3-Methyl-7-(4-methylbenzyl)-8-(1-piperazinyl)-3,7-dihydro-1H-purine-2,6-dione, 7-Benzyl-3-methyl-8-(4-methylpiperazin-1-yl)purine-2,6-dione. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C18H22N6O2?
C18H22N6O2 has a degree of unsaturation of 11. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.