Molecular formula
C15H16N6O
101 compounds have this formula on CompoundList.
- Molar mass
- 296.33g/mol
- Monoisotopic mass
- 296.1386Da
- Atoms
- 38
- Elements
- 4
- Rings plus double bonds
- 11
The formula C15H16N6O describes a molecule made of 15 carbon atoms, 16 hydrogen atoms, 6 nitrogen atoms and 1 oxygen atom. 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 × 1560.80%12.011 × 15 = 180.165 g/mol
- H Hydrogen × 165.44%1.008 × 16 = 16.128 g/mol
- N Nitrogen × 628.36%14.007 × 6 = 84.042 g/mol
- O Oxygen × 15.40%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C15H16N6O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 101 compounds
Amicarbalide
CAS 3459-96-9C15H16N6O
![(E)-8-(Benzylideneamino)-6-(tert-butyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazin-7(8H)-one chemical structure, C15H16N6O, CAS 328020-96-8](/s/MAMKTMSXVWCTJR-RQZCQDPDSA-N.svg)
(E)-8-(Benzylideneamino)-6-(tert-butyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazin-7(8H)-one
CAS 328020-96-8C15H16N6O
![4,6-Dimethyl-N-[5-(phenoxymethyl)-1H-1,2,4-triazol-3-yl]pyrimidin-2-amine chemical structure, C15H16N6O, CAS 717864-37-4](/s/JLJZLLDALDSFQD-UHFFFAOYSA-N.svg)
4,6-Dimethyl-N-[5-(phenoxymethyl)-1H-1,2,4-triazol-3-yl]pyrimidin-2-amine
CAS 717864-37-4C15H16N6O
![N~1~-[3-(benzyloxy)benzyl]-1H-tetrazole-1,5-diamine chemical structure, C15H16N6O, CAS 445413-75-2](/s/XCHYCELRMQJATG-UHFFFAOYSA-N.svg)
N~1~-[3-(benzyloxy)benzyl]-1H-tetrazole-1,5-diamine
CAS 445413-75-2C15H16N6O
![N'-[7-(4-Methoxyphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-N,N-dimethylmethanimidamide chemical structure, C15H16N6O, CAS 303145-77-9](/s/HSMBSVVEDQZTRD-LICLKQGHSA-N.svg)
N'-[7-(4-Methoxyphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-N,N-dimethylmethanimidamide
CAS 303145-77-9C15H16N6O
![{4-[(4-Methoxyphenyl)amino]pteridin-2-yl}dimethylamine chemical structure, C15H16N6O, CAS 946348-70-5](/s/BGUUGRVYZKMMSJ-UHFFFAOYSA-N.svg)
{4-[(4-Methoxyphenyl)amino]pteridin-2-yl}dimethylamine
CAS 946348-70-5C15H16N6O
![7-Phenyl-N-((tetrahydrofuran-2-yl)methyl)-7H-pyrazolo[3,4-d][1,2,3]triazin-4-amine chemical structure, C15H16N6O, CAS 1257553-52-8](/s/SBJXNIVBXGUZEL-UHFFFAOYSA-N.svg)
7-Phenyl-N-((tetrahydrofuran-2-yl)methyl)-7H-pyrazolo[3,4-d][1,2,3]triazin-4-amine
CAS 1257553-52-8C15H16N6O
![10-Oxa-5,7,13,17,18,21-hexazatetracyclo[12.5.2.12,6.017,20]docosa-1(20),2(22),3,5,14(21),15,18-heptaene chemical structure, C15H16N6O, CAS 1638644-63-9](/s/RVIXRYHDRVNLRY-UHFFFAOYSA-N.svg)
10-Oxa-5,7,13,17,18,21-hexazatetracyclo[12.5.2.12,6.017,20]docosa-1(20),2(22),3,5,14(21),15,18-heptaene
CAS 1638644-63-9C15H16N6O
![2-Morpholino-6-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amine chemical structure, C15H16N6O, CAS 320415-95-0](/s/ZPNSAUJUTLLXPA-UHFFFAOYSA-N.svg)
2-Morpholino-6-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amine
CAS 320415-95-0C15H16N6O
4-(Methylphenylamino)-6-morpholin-4-yl-1,3,5-triazine-2-carbonitrile
CAS 899373-14-9C15H16N6O
![(E)-N'-((1-Methyl-1H-benzo[d]imidazol-2-yl)methylene)-2-(2-methyl-1H-imidazol-1-yl)acetohydrazide chemical structure, C15H16N6O, CAS 1321692-93-6](/s/RQGJVIZRJLFOOT-RQZCQDPDSA-N.svg)
(E)-N'-((1-Methyl-1H-benzo[d]imidazol-2-yl)methylene)-2-(2-methyl-1H-imidazol-1-yl)acetohydrazide
CAS 1321692-93-6C15H16N6O
2-((4-(p-Tolylamino)pteridin-2-yl)amino)ethanol
CAS 946296-98-6C15H16N6O
![{2-[(2-Methoxyethyl)amino]pteridin-4-yl}phenylamine chemical structure, C15H16N6O, CAS 946298-72-2](/s/BGHQQQAJFHIGJQ-UHFFFAOYSA-N.svg)
{2-[(2-Methoxyethyl)amino]pteridin-4-yl}phenylamine
CAS 946298-72-2C15H16N6O
![N-([1,2,4]Triazolo[4,3-a]pyridin-3-ylmethyl)-4,5,6,7-tetrahydro-1H-indazole-3-carboxamide chemical structure, C15H16N6O, CAS 1436005-55-8](/s/XVRWTVLFLBMQGD-UHFFFAOYSA-N.svg)
N-([1,2,4]Triazolo[4,3-a]pyridin-3-ylmethyl)-4,5,6,7-tetrahydro-1H-indazole-3-carboxamide
CAS 1436005-55-8C15H16N6O
![N-[5-(2-Methoxyphenyl)-1H-1,2,4-triazol-3-yl]-4,6-dimethylpyrimidin-2-amine chemical structure, C15H16N6O, CAS 669719-91-9](/s/BPYITBBJGJVGNE-UHFFFAOYSA-N.svg)
N-[5-(2-Methoxyphenyl)-1H-1,2,4-triazol-3-yl]-4,6-dimethylpyrimidin-2-amine
CAS 669719-91-9C15H16N6O
![1-(3-(1H-1,2,3-Triazol-1-yl)pyrrolidin-1-yl)-2-(1H-benzo[d]imidazol-1-yl)ethanone chemical structure, C15H16N6O, CAS 2034288-90-7](/s/ATUFJSANTUEGJT-UHFFFAOYSA-N.svg)
1-(3-(1H-1,2,3-Triazol-1-yl)pyrrolidin-1-yl)-2-(1H-benzo[d]imidazol-1-yl)ethanone
CAS 2034288-90-7C15H16N6O
![N-[5-(4-Methoxyphenyl)-1H-1,2,4-triazol-3-yl]-4,6-dimethylpyrimidin-2-amine chemical structure, C15H16N6O, CAS 886181-84-6](/s/VBMYVZUTNVANRP-UHFFFAOYSA-N.svg)
N-[5-(4-Methoxyphenyl)-1H-1,2,4-triazol-3-yl]-4,6-dimethylpyrimidin-2-amine
CAS 886181-84-6C15H16N6O
N-(3-(1H-Pyrrol-1-yl)propyl)-3-(1H-tetrazol-1-yl)benzamide
CAS 1226435-96-6C15H16N6O
![N-(3-{2-Methylpyrazolo[1,5-a]pyrimidin-6-yl}propyl)pyrazine-2-carboxamide chemical structure, C15H16N6O, CAS 1797981-86-2](/s/HPGKTPIFBTVXLL-UHFFFAOYSA-N.svg)
N-(3-{2-Methylpyrazolo[1,5-a]pyrimidin-6-yl}propyl)pyrazine-2-carboxamide
CAS 1797981-86-2C15H16N6O
![(3R,5R)-1-(1-Oxo-2-propen-1-yl)-5-(7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-3-piperidinecarbonitrile chemical structure, C15H16N6O, CAS 1792180-83-6](/s/RQTXOFPRXFBPJJ-WDEREUQCSA-N.svg)
(3R,5R)-1-(1-Oxo-2-propen-1-yl)-5-(7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-3-piperidinecarbonitrile
CAS 1792180-83-6C15H16N6O
N-(1H-1,3-Benzimidazol-2-ylmethyl)-3-(2-pyrimidinylamino)propanamide
CAS 1436003-00-7C15H16N6O
![N-[2-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)ethyl]-2,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxamide chemical structure, C15H16N6O, CAS 1435989-80-2](/s/NJQTWTXFWFNZAY-UHFFFAOYSA-N.svg)
N-[2-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)ethyl]-2,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxamide
CAS 1435989-80-2C15H16N6O
![2-(1H-Benzo[d]imidazol-1-yl)-N-(2-(dimethylamino)pyrimidin-5-yl)acetamide chemical structure, C15H16N6O, CAS 1396807-40-1](/s/ZOEZOTZUHQPGFQ-UHFFFAOYSA-N.svg)
2-(1H-Benzo[d]imidazol-1-yl)-N-(2-(dimethylamino)pyrimidin-5-yl)acetamide
CAS 1396807-40-1C15H16N6O
N-(3-(1H-Pyrazol-1-yl)propyl)-4-phenyl-1H-1,2,3-triazole-5-carboxamide
CAS 1790196-88-1C15H16N6O
- N'-(1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-3-phenylpropanehydrazide1081121-48-3C15H16N6O
- (2S)-1-(Prop-2-yn-1-yl)-N-[1-(pyrimidin-2-yl)-1H-pyrazol-4-yl]pyrrolidine-2-carboxamide1375232-62-4C15H16N6O
- 1-(3-([1,2,4]Triazolo[1,5-a]pyrimidin-6-yl)propyl)-3-phenylurea2034377-90-5C15H16N6O
- 1-Ethyl-3-[3-(2-methyl-4-pyridinyl)-1H-pyrazolo[4,3-c]pyridin-6-yl]urea1431718-98-7C15H16N6O
- 1-(3-(2H-1,2,3-Triazol-2-yl)pyrrolidin-1-yl)-2-(1H-benzo[d]imidazol-1-yl)ethanone2034346-72-8C15H16N6O
- N-{[6-(1-Methyl-1H-pyrazol-4-yl)pyridin-3-yl]methyl}-2-(1H-pyrazol-1-yl)acetamide2034312-48-4C15H16N6O
- N-{[6-(1-Methyl-1H-pyrazol-5-yl)pyridin-3-yl]methyl}-2-(1H-pyrazol-1-yl)acetamide2034613-57-3C15H16N6O
- N-(2-(2H-1,2,3-Triazol-2-yl)ethyl)-5-methyl-1-phenyl-1H-pyrazole-4-carboxamide2097909-25-4C15H16N6O
- (3-(1H-Benzo[d]imidazol-1-yl)pyrrolidin-1-yl)(1-methyl-1H-1,2,3-triazol-4-yl)methanone2034383-48-5C15H16N6O
- 3-[4-(3-Phenyl-1,2,4-oxadiazol-5-yl)-1H-1,2,3-triazol-1-yl]piperidine2108826-32-8C15H16N6O
- 4-[4-(3-Phenyl-1,2,4-oxadiazol-5-yl)-1,2,3-triazol-1-yl]-piperidine2108968-64-3C15H16N6O
- 3-(((6-Morpholinopyridin-3-yl)methyl)amino)pyrazine-2-carbonitrile2176125-16-7C15H16N6O
- N-(1-Cyanocyclopentyl)-2-(5-phenyl-2H-1,2,3,4-tetrazol-2-yl)acetamide849533-39-7C15H16N6O
- 7-(4-Phenylpiperazin-1-yl)[1,2,4]triazolo[4,3-c]pyrimidin-3(2H)-one1112278-18-8C15H16N6O
- 2-(1H-Imidazol-1-yl)-6-methyl-4-morpholin-4-ylpyrido[3,2-d]pyrimidine1220114-28-2C15H16N6O
- 2-Benzyl-3-oxo-N'-[(Z)-phenylmethylidene]triazane-1-carbohydrazonamide3762-70-7C15H16N6O
- (2-Amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)(5-aminopyridin-3-yl)methanone1402445-81-1C15H16N6O
- N-{6-Cyano-5-[(4,6-dimethylpyridin-2-yl)amino]pyridin-3-yl}glycinamide1429913-98-3C15H16N6O
- N-{2-[2-(Pyrazin-2-yl)-1H-imidazol-1-yl]ethyl}-2-(1H-pyrrol-1-yl)acetamide2097932-18-6C15H16N6O
- 2-[(1-{Imidazo[1,2-b]pyridazin-6-yl}azetidin-3-yl)methyl]-6-methyl-2,3-dihydropyridazin-3-one2197850-59-0C15H16N6O
- 6-Methyl-2-[(1-{7H-pyrrolo[2,3-d]pyrimidin-4-yl}azetidin-3-yl)methyl]-2,3-dihydropyridazin-3-one2200305-83-3C15H16N6O
- N-[(2-Methoxypyridin-4-yl)methyl]-6-(2-methyl-1H-imidazol-1-yl)pyrimidin-4-amine2549051-64-9C15H16N6O
- 3-(Pyrimidin-5-yl)-N-(tetrahydro-2H-pyran-4-yl)imidazo[1,2-b]pyridazin-6-amine1012344-57-8C15H16N6O
- n3-(2-Ethoxy-phenyl)-1-pyridin-2-yl-1H-[1,2,4]triazole-3,5-diamine700808-41-9C15H16N6O
- n3-(4-Methoxy-2-methyl-phenyl)-1-pyridin-2-yl-1H-[1,2,4]triazole-3,5-diamine700806-86-6C15H16N6O
- N3-(4-Ethoxyphenyl)-5-(3-pyridinyl)-4H-1,2,4-triazole-3,4-diamine568590-01-2C15H16N6O
- 3-{3-[(Pyrimidin-2-yloxy)methyl]piperidin-1-yl}pyrazine-2-carbonitrile2379997-32-5C15H16N6O
- 3-{4-[(5-Methylpyrimidin-2-yl)oxy]piperidin-1-yl}pyrazine-2-carbonitrile2380034-39-7C15H16N6O
- 3-[(1-{1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}azetidin-3-yl)methoxy]pyridine2379971-64-7C15H16N6O
- 3-[(1-{3-Methyl-[1,2,4]triazolo[4,3-a]pyrazin-8-yl}azetidin-3-yl)methoxy]pyridine2379971-85-2C15H16N6O
- 9-Methyl-6-{3-[(pyridin-3-yloxy)methyl]azetidin-1-yl}-9H-purine2379971-89-6C15H16N6O
- 2-Methyl-1-[1-(1-methyl-1H-1,2,3-triazole-4-carbonyl)azetidin-3-yl]-1H-1,3-benzodiazole2380168-21-6C15H16N6O
- 4-[(1-{1,6-Dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}azetidin-3-yl)oxy]pyridine2380086-39-3C15H16N6O
- 3-[4-(4-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridine-4-carbonitrile2640955-26-4C15H16N6O
- 3-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-4-carbonitrile2640886-22-0C15H16N6O
- 3-[(1-{[1,2,4]Triazolo[4,3-b]pyridazin-6-yl}piperidin-3-yl)oxy]pyridine2877639-12-6C15H16N6O
- 6-[3-[(4-Methoxypyrimidin-2-yl)amino]pyrrolidin-1-yl]pyridine-2-carbonitrile3054550-20-5C15H16N6O
- 1-Phenyl-3-[(2H-tetrazol-5-yl)methoxy]-4,5,6,7-tetrahydro-1H-indazole61236-03-1C15H16N6O
- 2-(4-Piperidinyloxy)-7-(5-pyrimidinyl)-5H-pyrrolo[2,3-b]pyrazine1792188-10-3C15H16N6O
- 2-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-3-carbonitrile2415631-82-0C15H16N6O
- N-[2-(2-Methoxyphenyl)ethyl]-6-(1H-1,2,4-triazol-1-yl)pyrimidin-4-amine2640944-96-1C15H16N6O
- N-[2-(3-Methoxyphenyl)ethyl]-6-(1H-1,2,4-triazol-1-yl)pyrimidin-4-amine2640944-94-9C15H16N6O
- N-[2-(4-Methoxyphenyl)ethyl]-6-(1H-1,2,4-triazol-1-yl)pyrimidin-4-amine2640963-47-7C15H16N6O
- 3-[4-(4-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridine-2-carbonitrile2640967-18-4C15H16N6O
- 2-[4-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl]pyrimidine-4-carbonitrile2741948-89-8C15H16N6O
- N-[(6-Ethoxypyridin-3-yl)methyl]-6-(1H-pyrazol-1-yl)pyrimidin-4-amine2742047-12-5C15H16N6O
- 3-Methyl-4-[(1-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}pyrrolidin-3-yl)oxy]pyridine2741912-89-8C15H16N6O
- N-{3-[(9-Ethyl-9H-purin-6-yl)amino]phenyl}acetamide2640821-90-3C15H16N6O
- N-{4-[(9-Ethyl-9H-purin-6-yl)amino]phenyl}acetamide2640966-67-0C15H16N6O
- 6-[4-(4-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridine-2-carbonitrile2415531-13-2C15H16N6O
- 2-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-4-carbonitrile2415542-83-3C15H16N6O
- 6-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-3-carbonitrile2415532-70-4C15H16N6O
- 6-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-2-carbonitrile2415564-76-8C15H16N6O
- 4-[4-(4-Methoxypyrimidin-2-yl)piperazin-1-yl]pyridine-2-carbonitrile2742052-88-4C15H16N6O
- 4-[4-(6-Methoxypyrimidin-4-yl)piperazin-1-yl]pyridine-2-carbonitrile2742053-31-0C15H16N6O
- 3-{3-[(Pyrazin-2-yloxy)methyl]piperidin-1-yl}pyrazine-2-carbonitrile2770633-59-3C15H16N6O
- 2-(3-{[(6-Methylpyridazin-3-yl)oxy]methyl}pyrrolidin-1-yl)pyrimidine-4-carbonitrile2770594-99-3C15H16N6O
- 2-[4-(6-Methoxypyridin-2-yl)piperazin-1-yl]pyrimidine-4-carbonitrile2770610-13-2C15H16N6O
- 9-Cyclopropyl-N-[(2-methoxypyridin-3-yl)methyl]-9H-purin-6-amine2770608-23-4C15H16N6O
- 2-(4-{Pyrazolo[1,5-a]pyrimidin-5-yloxy}piperidin-1-yl)pyrazine2770633-74-2C15H16N6O
- 2-(4-{Pyrazolo[1,5-a]pyrimidin-5-yloxy}piperidin-1-yl)pyrimidine2770605-92-8C15H16N6O
- 3-[(1-{3-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}azetidin-3-yl)methoxy]pyridine2770622-06-3C15H16N6O
- 3-[(1-{5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl}azetidin-3-yl)methoxy]pyridine2770588-61-7C15H16N6O
- 2-[(1-{Pyrazolo[1,5-a]pyrazin-4-yl}pyrrolidin-3-yl)methoxy]pyrazine2770623-66-8C15H16N6O
- N-[1-(3-Cyano-6-methylpyridin-2-yl)azetidin-3-yl]-1-methyl-1H-pyrazole-3-carboxamide3054540-08-5C15H16N6O
- 3-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-2-carbonitrile3030845-08-7C15H16N6O
- 5-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-2-carbonitrile3030819-64-5C15H16N6O
- 2-{3-[(4-Methoxypyrimidin-2-yl)amino]pyrrolidin-1-yl}pyridine-3-carbonitrile3030828-51-1C15H16N6O
- 2-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-3-carbonitrile3030813-15-8C15H16N6O
- 6-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-3-carbonitrile3030819-22-5C15H16N6O
- 2-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-4-carbonitrile3030819-43-0C15H16N6O
- 6-[4-(1-Methyl-6-oxo-1,6-dihydropyridazin-4-yl)piperazin-1-yl]pyridine-2-carbonitrile3030782-90-9C15H16N6O
- 2-Methyl-6-{2-methylpyrazolo[1,5-a]pyrazin-4-yl}-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-4-one3054622-92-0C15H16N6O
- 2-Methyl-6-{5-methylpyrazolo[1,5-a]pyrimidin-7-yl}-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-4-one3054609-86-5C15H16N6O
- 2-Methyl-6-{7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl}-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidin-4-one3054634-87-3C15H16N6O
- 3-(6-Methylpyrimidin-4-yl)-6-(pyrazine-2-carbonyl)-3,6-diazabicyclo[3.1.1]heptane3054630-06-4C15H16N6O
Frequently asked questions
What is the molar mass of C15H16N6O?
The molar mass of C15H16N6O is 296.33 g/mol, calculated from standard atomic weights for 15 carbon atoms, 16 hydrogen atoms, 6 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 296.1386 Da.
How many compounds have the formula C15H16N6O?
CompoundList lists 101 compounds with the molecular formula C15H16N6O, including Amicarbalide, (E)-8-(Benzylideneamino)-6-(tert-butyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazin-7(8H)-one, 4,6-Dimethyl-N-[5-(phenoxymethyl)-1H-1,2,4-triazol-3-yl]pyrimidin-2-amine. 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 C15H16N6O?
C15H16N6O 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.