Primary amines
- (9)
- (3)
- (6)
- (4)
- (4)
- (2)
- (2)
- (2)
- (2)
- (2)
- (1)
- (16)
- (1)
- (4)
- (6)
- (6)
- (2)
- (3)
- (1)
- (10)
- (4)
- (2)
- (2)
- (8)
- (1)
- (5)
- (12)
- (2)
- (1)
- (5)
- (8)
- (3)
- (3)
- (2)
- (6)
- (1)
- (4)
- (2)
- (2)
- (2)
- (9)
- (4)
- (3)
- (2)
- (5)
- (2)
- (2)
- (2)
- (4)
- (1)
- (5)
- (2)
- (2)
- (2)
- (6)
- (2)
- (5)
- (5)
- (2)
- (4)
- (4)
- (2)
- (2)
- (1)
- (2)
- (2)
- (1)
- (2)
- (2)
- (2)
- (8)
- (2)
- (2)
- (1)
- (7)
- (5)
- (8)
- (2)
- (10)
- (4)
- (9)
- (2)
- (3)
- (2)
- (1)
- (4)
- (5)
- (3)
- (2)
- (2)
- (1)
- (5)
- (6)
- (2)
- (6)
- (2)
- (2)
- (4)
- (1)
- (2)
- (7)
- (2)
- (2)
- (1)
- (1)
- (2)
- (2)
- (1)
- (2)
- (6)
- (1)
- (2)
- (1)
- (1)
- (2)
- (1)
- (1)
- (4)
- (2)
- (2)
- (2)
- (2)
- (2)
- (2)
- (2)
- (1)
- (2)
- (2)
- (1)
- (5)
- (4)
- (2)
- (1)
- (2)
- (2)
- (3)
- (5)
- (7)
- (8)
- (1)
- (14)
- (7)
- (3)
- (6)
- (8)
- (4)
- (22)
- (7)
- (5)
- (8)
- (2)
- (2)
- (8)
- (5)
- (20)
- (7)
- (1)
- (6)
- (7)
- (5)
- (2)
- (3)
- (6)
- (1)
- (15)
- (81)
- (7)
- (7)
- (15)
- (1)
- (4)
- (1)
- (41)
- (20)
- (2)
- (2)
- (3)
- (1)
- (5)
- (2)
- (3)
- (112)
- (48)
- (11)
- (10)
- (7)
- (1)
- (5)
- (5)
- (4)
- (106)
- (2)
- (19)
- (7)
- (3)
- (1)
- (33)
- (34)
- (2)
- (1)
- (2)
- (4)
- (2)
- (9)
- (3)
- (1)
- (5)
- (2)
- (4)
- (13)
- (2)
- (3)
- (6)
- (6)
- (36)
- (37)
- (106)
- (2)
- (7)
- (5)
- (5)
- (18)
- (36)
- (2)
- (9)
- (13)
- (6)
- (1)
- (5)
- (1)
- (1)
- (1)
- (7)
- (2)
- (7)
- (6)
- (32)
- (96)
- (5)
- (73)
- (20)
- (4)
- (2)
- (1)
- (7)
- (13)
- (160)
- (3)
- (1)
- (5)
- (220)
- (4)
- (5)
- (2)
- (2)
- (18)
- (5)
- (2)
- (2)
- (2)
- (2)
- (4)
- (2)
- (3)
- (3)
- (2)
- (2)
- (4)
- (2)
- (1)
- (1)
- (4)
- (2)
- (3)
- (7)
- (5)
- (3)
- (2)
- (3)
- (5)
- (2)
- (2)
- (2)
- (3)
- (4)
- (2)
- (2)
- (3)
- (1)
- (2)
- (2)
- (8)
- (2)
- (3)
- (2)
- (1)
- (2)
- (1)
- (2)
- (5)
- (2)
- (2)
- (2)
- (2)
- (2)
- (3)
- (2)
- (2)
- (3)
- (4)
- (2)
- (2)
- (1)
- (3)
- (3)
- (2)
- (1)
- (2)
- (3)
- (2)
- (2)
- (3)
- (1)
- (2)
- (3)
- (2)
- (2)
- (1)
- (3)
- (2)
- (2)
- (3)
- (4)
- (2)
- (5)
- (4)
- (2)
- (5)
- (2)
- (3)
- (3)
- (2)
- (3)
- (2)
- (3)
- (4)
- (2)
- (2)
- (2)
- (2)
- (2)
- (3)
- (2)
- (1)
- (3)
- (2)
- (1)
- (3)
- (2)
- (3)
- (2)
- (2)
- (3)
- (2)
- (2)
- (2)
- (2)
- (3)
- (3)
- (1)
- (3)
- (2)
- (4)
- (4)
- (3)
- (3)
- (2)
- (2)
- (2)
- (2)
- (3)
- (1)
- (10)
- (3)
- (2)
- (1)
- (2)
- (2)
- (2)
- (2)
- (2)
- (2)
- (3)
- (2)
- (2)
- (3)
- (4)
- (5)
- (3)
- (1)
- (3)
- (1)
- (2)
- (2)
- (4)
- (3)
- (1)
- (1)
- (2)
- (1)
- (3)
- (3)
- (3)
- (4)
- (2)
- (1)
- (3)
- (1)
- (5)
- (1)
Filtered Search Results
1,12-Diaminododecane, 98+%
CAS: 2783-17-7 Molecular Formula: C12H28N2 Molecular Weight (g/mol): 200.37 MDL Number: MFCD00008155 InChI Key: QFTYSVGGYOXFRQ-UHFFFAOYSA-N Synonym: 1,12-diaminododecane,1,12-dodecanediamine,dodecamethylenediamine,dodecyldiamine,1,12-dodecamethylenediamine,1,12-diamindodecane,1,12'-dodecylenediamine,1,12'-dodecamethylenediamine,unii-j3lm80w9nt,1,12-dodecylenediamine PubChem CID: 17727 ChEBI: CHEBI:49385 IUPAC Name: dodecane-1,12-diamine SMILES: C(CCCCCCN)CCCCCN
| PubChem CID | 17727 |
|---|---|
| CAS | 2783-17-7 |
| Molecular Weight (g/mol) | 200.37 |
| ChEBI | CHEBI:49385 |
| MDL Number | MFCD00008155 |
| SMILES | C(CCCCCCN)CCCCCN |
| Synonym | 1,12-diaminododecane,1,12-dodecanediamine,dodecamethylenediamine,dodecyldiamine,1,12-dodecamethylenediamine,1,12-diamindodecane,1,12'-dodecylenediamine,1,12'-dodecamethylenediamine,unii-j3lm80w9nt,1,12-dodecylenediamine |
| IUPAC Name | dodecane-1,12-diamine |
| InChI Key | QFTYSVGGYOXFRQ-UHFFFAOYSA-N |
| Molecular Formula | C12H28N2 |
1-Pentylamine, 98%
CAS: 110-58-7 Molecular Formula: C5H13N Molecular Weight (g/mol): 87.166 MDL Number: MFCD00008236 InChI Key: DPBLXKKOBLCELK-UHFFFAOYSA-N Synonym: amylamine,1-aminopentane,pentylamine,1-pentylamine,n-amylamine,1-pentanamine,n-pentylamine,monoamylamine,norleucamine,amyl amine PubChem CID: 8060 ChEBI: CHEBI:74848 IUPAC Name: pentan-1-amine SMILES: CCCCCN
| PubChem CID | 8060 |
|---|---|
| CAS | 110-58-7 |
| Molecular Weight (g/mol) | 87.166 |
| ChEBI | CHEBI:74848 |
| MDL Number | MFCD00008236 |
| SMILES | CCCCCN |
| Synonym | amylamine,1-aminopentane,pentylamine,1-pentylamine,n-amylamine,1-pentanamine,n-pentylamine,monoamylamine,norleucamine,amyl amine |
| IUPAC Name | pentan-1-amine |
| InChI Key | DPBLXKKOBLCELK-UHFFFAOYSA-N |
| Molecular Formula | C5H13N |
tert-Octylamine, 95%
CAS: 107-45-9 Molecular Formula: C8H19N Molecular Weight (g/mol): 129.24 MDL Number: MFCD00008053 InChI Key: QIJIUJYANDSEKG-UHFFFAOYSA-N Synonym: tert-octylamine,1,1,3,3-tetramethylbutylamine,2-pentanamine, 2,4,4-trimethyl,t-octylamine,2,4,4-trimethyl-2-pentylamine,butylamine, 1,1,3,3-tetramethyl,1,1,3,3-tetramethylbutanamine,butylamine, bis 1,3-dimethyl,unii-s84lil883b,2,4,4-trimethyl-2-pentanamine PubChem CID: 61017 IUPAC Name: 2,4,4-trimethylpentan-2-amine SMILES: CC(C)(C)CC(C)(C)N
| PubChem CID | 61017 |
|---|---|
| CAS | 107-45-9 |
| Molecular Weight (g/mol) | 129.24 |
| MDL Number | MFCD00008053 |
| SMILES | CC(C)(C)CC(C)(C)N |
| Synonym | tert-octylamine,1,1,3,3-tetramethylbutylamine,2-pentanamine, 2,4,4-trimethyl,t-octylamine,2,4,4-trimethyl-2-pentylamine,butylamine, 1,1,3,3-tetramethyl,1,1,3,3-tetramethylbutanamine,butylamine, bis 1,3-dimethyl,unii-s84lil883b,2,4,4-trimethyl-2-pentanamine |
| IUPAC Name | 2,4,4-trimethylpentan-2-amine |
| InChI Key | QIJIUJYANDSEKG-UHFFFAOYSA-N |
| Molecular Formula | C8H19N |
2-Ethylhexylamine, 99%
CAS: 104-75-6 Molecular Formula: C8H19N Molecular Weight (g/mol): 129.25 MDL Number: MFCD00008148 InChI Key: LTHNHFOGQMKPOV-UHFFFAOYSA-N Synonym: 2-ethylhexylamine,1-hexanamine, 2-ethyl,2-ethyl-1-hexylamine,2-ethyl hexylamine,2-ethylhexanamine,1-amino-2-ethylhexane,hexylamine, 2-ethyl,beta-ethylhexylamine,1-amino-2-ethylhexan,isooctylame PubChem CID: 7719 IUPAC Name: 2-ethylhexan-1-amine SMILES: CCCCC(CC)CN
| PubChem CID | 7719 |
|---|---|
| CAS | 104-75-6 |
| Molecular Weight (g/mol) | 129.25 |
| MDL Number | MFCD00008148 |
| SMILES | CCCCC(CC)CN |
| Synonym | 2-ethylhexylamine,1-hexanamine, 2-ethyl,2-ethyl-1-hexylamine,2-ethyl hexylamine,2-ethylhexanamine,1-amino-2-ethylhexane,hexylamine, 2-ethyl,beta-ethylhexylamine,1-amino-2-ethylhexan,isooctylame |
| IUPAC Name | 2-ethylhexan-1-amine |
| InChI Key | LTHNHFOGQMKPOV-UHFFFAOYSA-N |
| Molecular Formula | C8H19N |
Propylamine hydrochloride, 98%
CAS: 556-53-6 Molecular Formula: C3H10ClN Molecular Weight (g/mol): 95.57 MDL Number: MFCD00012911 InChI Key: PYNUOAIJIQGACY-UHFFFAOYSA-N Synonym: propylamine hydrochloride,n-propylamine hydrochloride,1-propanamine, hydrochloride,propylammonium chloride,propan-1-amine hydrochloride,1-propylammonium chloride,n-propylammonium chloride,propylamine, hydrochloride,unii-a1z6ovy2hg,a1z6ovy2hg PubChem CID: 11165 IUPAC Name: propan-1-amine;hydrochloride SMILES: [H+].[Cl-].CCCN
| PubChem CID | 11165 |
|---|---|
| CAS | 556-53-6 |
| Molecular Weight (g/mol) | 95.57 |
| MDL Number | MFCD00012911 |
| SMILES | [H+].[Cl-].CCCN |
| Synonym | propylamine hydrochloride,n-propylamine hydrochloride,1-propanamine, hydrochloride,propylammonium chloride,propan-1-amine hydrochloride,1-propylammonium chloride,n-propylammonium chloride,propylamine, hydrochloride,unii-a1z6ovy2hg,a1z6ovy2hg |
| IUPAC Name | propan-1-amine;hydrochloride |
| InChI Key | PYNUOAIJIQGACY-UHFFFAOYSA-N |
| Molecular Formula | C3H10ClN |
Cyclooctylamine, 97%
CAS: 5452-37-9 Molecular Formula: C8H17N Molecular Weight (g/mol): 127.23 MDL Number: MFCD00001748 InChI Key: HSOHBWMXECKEKV-UHFFFAOYSA-N Synonym: cyclooctylamine,aminocyclooctane,cyclooctyl amine,acmc-1ap2c,hsohbwmxeckekv-uhfffaoysa,cyclooctylamine, purum gc PubChem CID: 2903 IUPAC Name: cyclooctanamine SMILES: C1CCCC(CCC1)N
| PubChem CID | 2903 |
|---|---|
| CAS | 5452-37-9 |
| Molecular Weight (g/mol) | 127.23 |
| MDL Number | MFCD00001748 |
| SMILES | C1CCCC(CCC1)N |
| Synonym | cyclooctylamine,aminocyclooctane,cyclooctyl amine,acmc-1ap2c,hsohbwmxeckekv-uhfffaoysa,cyclooctylamine, purum gc |
| IUPAC Name | cyclooctanamine |
| InChI Key | HSOHBWMXECKEKV-UHFFFAOYSA-N |
| Molecular Formula | C8H17N |
2-(2-Aminoethyl)pyridine, 95%
CAS: 2706-56-1 Molecular Formula: C7H10N2 Molecular Weight (g/mol): 122.17 MDL Number: MFCD00006367 InChI Key: XPQIPUZPSLAZDV-UHFFFAOYSA-N Synonym: 2-2-aminoethyl pyridine,2-pyridylethylamine,2-2-pyridyl ethylamine,2-pyridin-2-yl ethanamine,2-pyridineethanamine,demethylbetahistine,2-pyridin-2-yl ethan-1-amine,alpha-pyridylethylamine,pyridine, 2-2-aminoethyl,2-aminoethylpyridine PubChem CID: 75919 ChEBI: CHEBI:74024 IUPAC Name: 2-pyridin-2-ylethanamine SMILES: NCCC1=CC=CC=N1
| PubChem CID | 75919 |
|---|---|
| CAS | 2706-56-1 |
| Molecular Weight (g/mol) | 122.17 |
| ChEBI | CHEBI:74024 |
| MDL Number | MFCD00006367 |
| SMILES | NCCC1=CC=CC=N1 |
| Synonym | 2-2-aminoethyl pyridine,2-pyridylethylamine,2-2-pyridyl ethylamine,2-pyridin-2-yl ethanamine,2-pyridineethanamine,demethylbetahistine,2-pyridin-2-yl ethan-1-amine,alpha-pyridylethylamine,pyridine, 2-2-aminoethyl,2-aminoethylpyridine |
| IUPAC Name | 2-pyridin-2-ylethanamine |
| InChI Key | XPQIPUZPSLAZDV-UHFFFAOYSA-N |
| Molecular Formula | C7H10N2 |
n-Decylamine, 99%
CAS: 2016-57-1 Molecular Formula: C10H23N Molecular Weight (g/mol): 157.30 MDL Number: MFCD00008149 InChI Key: MHZGKXUYDGKKIU-UHFFFAOYSA-N Synonym: decylamine,1-aminodecane,1-decanamine,n-decylamine,1-decylamine,decanamine,monodecylamine,kemamine p 190d,aminodecane,decyl amine PubChem CID: 8916 IUPAC Name: decan-1-amine SMILES: CCCCCCCCCCN
| PubChem CID | 8916 |
|---|---|
| CAS | 2016-57-1 |
| Molecular Weight (g/mol) | 157.30 |
| MDL Number | MFCD00008149 |
| SMILES | CCCCCCCCCCN |
| Synonym | decylamine,1-aminodecane,1-decanamine,n-decylamine,1-decylamine,decanamine,monodecylamine,kemamine p 190d,aminodecane,decyl amine |
| IUPAC Name | decan-1-amine |
| InChI Key | MHZGKXUYDGKKIU-UHFFFAOYSA-N |
| Molecular Formula | C10H23N |
Cyclopentylamine, 99+%
CAS: 1003-03-8 Molecular Formula: C5H11N Molecular Weight (g/mol): 85.15 MDL Number: MFCD00001380 InChI Key: NISGSNTVMOOSJQ-UHFFFAOYSA-N Synonym: cyclopentylamine,aminocyclopentane,amino cyclopentane,unii-4259vry3gn,1cb,cylcopentylamine,cyclopentyl amine,cyclopentyl-amine,n-cyclopentylamine,cyclo-pentyl amine PubChem CID: 2906 IUPAC Name: cyclopentanamine SMILES: NC1CCCC1
| PubChem CID | 2906 |
|---|---|
| CAS | 1003-03-8 |
| Molecular Weight (g/mol) | 85.15 |
| MDL Number | MFCD00001380 |
| SMILES | NC1CCCC1 |
| Synonym | cyclopentylamine,aminocyclopentane,amino cyclopentane,unii-4259vry3gn,1cb,cylcopentylamine,cyclopentyl amine,cyclopentyl-amine,n-cyclopentylamine,cyclo-pentyl amine |
| IUPAC Name | cyclopentanamine |
| InChI Key | NISGSNTVMOOSJQ-UHFFFAOYSA-N |
| Molecular Formula | C5H11N |
1,6-Hexanediamine, 99.5+%
CAS: 124-09-4 Molecular Formula: C6H16N2 Molecular Weight (g/mol): 116.21 InChI Key: NAQMVNRVTILPCV-UHFFFAOYSA-N Synonym: 1,6-hexanediamine,1,6-diaminohexane,hexamethylenediamine,hmda,1,6-hexylenediamine,1,6-hexamethylenediamine,1,6-diamino-n-hexane,hexamethylene diamine,hexylenediamine,1,6-hexanediamine solution PubChem CID: 16402 ChEBI: CHEBI:39618 IUPAC Name: hexane-1,6-diamine SMILES: C(CCCN)CCN
| PubChem CID | 16402 |
|---|---|
| CAS | 124-09-4 |
| Molecular Weight (g/mol) | 116.21 |
| ChEBI | CHEBI:39618 |
| SMILES | C(CCCN)CCN |
| Synonym | 1,6-hexanediamine,1,6-diaminohexane,hexamethylenediamine,hmda,1,6-hexylenediamine,1,6-hexamethylenediamine,1,6-diamino-n-hexane,hexamethylene diamine,hexylenediamine,1,6-hexanediamine solution |
| IUPAC Name | hexane-1,6-diamine |
| InChI Key | NAQMVNRVTILPCV-UHFFFAOYSA-N |
| Molecular Formula | C6H16N2 |
Ethylenediamine, 99%
CAS: 107-15-3 Molecular Formula: C2H8N2 Molecular Weight (g/mol): 60.10 MDL Number: MFCD00008204 InChI Key: PIICEJLVQHRZGT-UHFFFAOYSA-N Synonym: ethylenediamine,1,2-ethanediamine,1,2-diaminoethane,ethylene diamine,ethylenediamine,dimethylenediamine,edamine,1,2-ethylenediamine,aethaldiamin,aethylenediamin PubChem CID: 3301 ChEBI: CHEBI:30347 IUPAC Name: ethane-1,2-diamine SMILES: NCCN
| PubChem CID | 3301 |
|---|---|
| CAS | 107-15-3 |
| Molecular Weight (g/mol) | 60.10 |
| ChEBI | CHEBI:30347 |
| MDL Number | MFCD00008204 |
| SMILES | NCCN |
| Synonym | ethylenediamine,1,2-ethanediamine,1,2-diaminoethane,ethylene diamine,ethylenediamine,dimethylenediamine,edamine,1,2-ethylenediamine,aethaldiamin,aethylenediamin |
| IUPAC Name | ethane-1,2-diamine |
| InChI Key | PIICEJLVQHRZGT-UHFFFAOYSA-N |
| Molecular Formula | C2H8N2 |
1,6-Diaminohexane, 98+%
CAS: 124-09-4 Molecular Formula: C6H16N2 MDL Number: MFCD00008243 InChI Key: NAQMVNRVTILPCV-UHFFFAOYSA-N Synonym: 1,6-hexanediamine,1,6-diaminohexane,hexamethylenediamine,hmda,1,6-hexylenediamine,1,6-hexamethylenediamine,1,6-diamino-n-hexane,hexamethylene diamine,hexylenediamine,1,6-hexanediamine solution PubChem CID: 16402 ChEBI: CHEBI:39618 IUPAC Name: hexane-1,6-diamine
| PubChem CID | 16402 |
|---|---|
| CAS | 124-09-4 |
| ChEBI | CHEBI:39618 |
| MDL Number | MFCD00008243 |
| Synonym | 1,6-hexanediamine,1,6-diaminohexane,hexamethylenediamine,hmda,1,6-hexylenediamine,1,6-hexamethylenediamine,1,6-diamino-n-hexane,hexamethylene diamine,hexylenediamine,1,6-hexanediamine solution |
| IUPAC Name | hexane-1,6-diamine |
| InChI Key | NAQMVNRVTILPCV-UHFFFAOYSA-N |
| Molecular Formula | C6H16N2 |
1,8-Diaminooctane, 98%
CAS: 373-44-4 Molecular Formula: C8H22Cl2N2 Molecular Weight (g/mol): 217.18 MDL Number: MFCD00008248 InChI Key: ZFLWZOGXFQNIMT-UHFFFAOYSA-N Synonym: 1,8-diaminooctane,1,8-octanediamine,octamethylenediamine,1,8-octylenediamine,1,8-octamethylenediamine,diaminooctane,octane 1,8-diamine,unii-53a6694pie,alpha,omega-diaminooctane,chembl29392 PubChem CID: 24250 ChEBI: CHEBI:73112 IUPAC Name: octane-1,8-diamine SMILES: [Cl-].[Cl-].[NH3+]CCCCCCCC[NH3+]
| PubChem CID | 24250 |
|---|---|
| CAS | 373-44-4 |
| Molecular Weight (g/mol) | 217.18 |
| ChEBI | CHEBI:73112 |
| MDL Number | MFCD00008248 |
| SMILES | [Cl-].[Cl-].[NH3+]CCCCCCCC[NH3+] |
| Synonym | 1,8-diaminooctane,1,8-octanediamine,octamethylenediamine,1,8-octylenediamine,1,8-octamethylenediamine,diaminooctane,octane 1,8-diamine,unii-53a6694pie,alpha,omega-diaminooctane,chembl29392 |
| IUPAC Name | octane-1,8-diamine |
| InChI Key | ZFLWZOGXFQNIMT-UHFFFAOYSA-N |
| Molecular Formula | C8H22Cl2N2 |
1-Adamantanamine, 98%
CAS: 768-94-5 Molecular Formula: C10H17N Molecular Weight (g/mol): 151.253 MDL Number: MFCD00074732 InChI Key: DKNWSYNQZKUICI-UHFFFAOYSA-N Synonym: amantadine,1-adamantanamine,1-adamantylamine,1-aminoadamantane,adamantanamine,adamantylamine,aminoadamantane,amantidine,symadine,symmetrel PubChem CID: 2130 ChEBI: CHEBI:2618 IUPAC Name: adamantan-1-amine SMILES: C1C2CC3CC1CC(C2)(C3)N
| PubChem CID | 2130 |
|---|---|
| CAS | 768-94-5 |
| Molecular Weight (g/mol) | 151.253 |
| ChEBI | CHEBI:2618 |
| MDL Number | MFCD00074732 |
| SMILES | C1C2CC3CC1CC(C2)(C3)N |
| Synonym | amantadine,1-adamantanamine,1-adamantylamine,1-aminoadamantane,adamantanamine,adamantylamine,aminoadamantane,amantidine,symadine,symmetrel |
| IUPAC Name | adamantan-1-amine |
| InChI Key | DKNWSYNQZKUICI-UHFFFAOYSA-N |
| Molecular Formula | C10H17N |
(S)-1-Cyclopropylethylamine, ChiPros™, 98%, ee 98+%
CAS: 195604-39-8 Molecular Formula: C5H11N Molecular Weight (g/mol): 85.15 MDL Number: MFCD08064289 InChI Key: IXCXVGWKYIDNOS-BYPYZUCNSA-N PubChem CID: 7363995 IUPAC Name: (1S)-1-cyclopropylethanamine SMILES: CC(C1CC1)N
| PubChem CID | 7363995 |
|---|---|
| CAS | 195604-39-8 |
| Molecular Weight (g/mol) | 85.15 |
| MDL Number | MFCD08064289 |
| SMILES | CC(C1CC1)N |
| IUPAC Name | (1S)-1-cyclopropylethanamine |
| InChI Key | IXCXVGWKYIDNOS-BYPYZUCNSA-N |
| Molecular Formula | C5H11N |