(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid

C69H121N27O22S2 — CID 25074923

IUPAC(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid
SMILESCC[C@H](C)[C@H](NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](N)CCCN=C(N)N)[C@@H](C)O)C(C)C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@H](C(=O)NCC(=O)N[C@@H](CS)C(=O)N[C@@H](CC(C)C)C(=O)O)[C@@H](C)O
InChIInChI=1S/C69H121N27O22S2/c1-9-32(6)50(94-56(107)39(16-17-48(102)103)86-54(105)37(14-11-19-80-68(74)75)85-61(112)45(28-120)92-63(114)49(31(4)5)93-65(116)52(34(8)99)95-53(104)36(70)13-10-18-79-67(72)73)64(115)87-38(15-12-20-81-69(76)77)55(106)88-40(22-35-24-78-29-83-35)57(108)89-41(23-46(71)100)58(109)91-43(26-97)59(110)96-51(33(7)98)62(113)82-25-47(101)84-44(27-119)60(111)90-42(66(117)118)21-30(2)3/h24,29-34,36-45,49-52,97-99,119-120H,9-23,25-28,70H2,1-8H3,(H2,71,100)(H,78,83)(H,82,113)(H,84,101)(H,85,112)(H,86,105)(H,87,115)(H,88,106)(H,89,108)(H,90,111)(H,91,109)(H,92,114)(H,93,116)(H,94,107)(H,95,104)(H,96,110)(H,102,103)(H,117,118)(H4,72,73,79)(H4,74,75,80)(H4,76,77,81)/t32-,33+,34+,36-,37-,38-,39-,40-,41-,42-,43-,44-,45-,49-,50-,51-,52-/m0/s1
InChIKeyADOOUNDDDOJZCP-MJVDAXPRSA-N
MW1745.03 g/mol
LogP-11.95
Rot. Bonds58

About (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid

(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid (PubChem CID 25074923) has the molecular formula C69H121N27O22S2 and a molecular weight of 1745.03 g/mol. Its IUPAC name is (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid.

Molecular Properties

Compound Name(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid
PubChem CID25074923
Molecular FormulaC69H121N27O22S2
Molecular Weight1745.03 g/mol
Exact Mass1743.86
IUPAC Name(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid
SMILESCC[C@H](C)[C@H](NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](N)CCCN=C(N)N)[C@@H](C)O)C(C)C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@H](C(=O)NCC(=O)N[C@@H](CS)C(=O)N[C@@H](CC(C)C)C(=O)O)[C@@H](C)O
InChIInChI=1S/C69H121N27O22S2/c1-9-32(6)50(94-56(107)39(16-17-48(102)103)86-54(105)37(14-11-19-80-68(74)75)85-61(112)45(28-120)92-63(114)49(31(4)5)93-65(116)52(34(8)99)95-53(104)36(70)13-10-18-79-67(72)73)64(115)87-38(15-12-20-81-69(76)77)55(106)88-40(22-35-24-78-29-83-35)57(108)89-41(23-46(71)100)58(109)91-43(26-97)59(110)96-51(33(7)98)62(113)82-25-47(101)84-44(27-119)60(111)90-42(66(117)118)21-30(2)3/h24,29-34,36-45,49-52,97-99,119-120H,9-23,25-28,70H2,1-8H3,(H2,71,100)(H,78,83)(H,82,113)(H,84,101)(H,85,112)(H,86,105)(H,87,115)(H,88,106)(H,89,108)(H,90,111)(H,91,109)(H,92,114)(H,93,116)(H,94,107)(H,95,104)(H,96,110)(H,102,103)(H,117,118)(H4,72,73,79)(H4,74,75,80)(H4,76,77,81)/t32-,33+,34+,36-,37-,38-,39-,40-,41-,42-,43-,44-,45-,49-,50-,51-,52-/m0/s1
InChIKeyADOOUNDDDOJZCP-MJVDAXPRSA-N
XLogP-11.95
TPSA833.68 Ų
H-Bond Donors30
H-Bond Acceptors27
Rotatable Bonds58
Heavy Atoms120
Complexity

Lipinski Rule of Five

3 violations

RuleValue
MW ≤ 5001745.03
LogP ≤ 5-11.95
H-Bond Donors ≤ 530
H-Bond Acceptors ≤ 1027

Computed Properties (RDKit)

Structural Alerts{'alert_name': 'Aliphatic_long_chain', 'substructure': 'N/A'}, {'alert_name': 'imine_1', 'substructure': 'N/A'}, {'alert_name': 'imine_2', 'substructure': 'N/A'}, {'alert_name': 'thiol_2', 'substructure': 'N/A'}

Analyze (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid with MolForge

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Related Compounds

Frequently Asked Questions

What is the IUPAC name of (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid?
The IUPAC name of (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid (CID 25074923) is (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid.
What is the SMILES notation for (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid?
The canonical SMILES for (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid is CC[C@H](C)[C@H](NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](N)CCCN=C(N)N)[C@@H](C)O)C(C)C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@H](C(=O)NCC(=O)N[C@@H](CS)C(=O)N[C@@H](CC(C)C)C(=O)O)[C@@H](C)O.
What is the InChIKey of (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid?
The InChIKey is ADOOUNDDDOJZCP-MJVDAXPRSA-N. The full InChI is InChI=1S/C69H121N27O22S2/c1-9-32(6)50(94-56(107)39(16-17-48(102)103)86-54(105)37(14-11-19-80-68(74)75)85-61(112)45(28-120)92-63(114)49(31(4)5)93-65(116)52(34(8)99)95-53(104)36(70)13-10-18-79-67(72)73)64(115)87-38(15-12-20-81-69(76)77)55(106)88-40(22-35-24-78-29-83-35)57(108)89-41(23-46(71)100)58(109)91-43(26-97)59(110)96-51(33(7)98)62(113)82-25-47(101)84-44(27-119)60(111)90-42(66(117)118)21-30(2)3/h24,29-34,36-45,49-52,97-99,119-120H,9-23,25-28,70H2,1-8H3,(H2,71,100)(H,78,83)(H,82,113)(H,84,101)(H,85,112)(H,86,105)(H,87,115)(H,88,106)(H,89,108)(H,90,111)(H,91,109)(H,92,114)(H,93,116)(H,94,107)(H,95,104)(H,96,110)(H,102,103)(H,117,118)(H4,72,73,79)(H4,74,75,80)(H4,76,77,81)/t32-,33+,34+,36-,37-,38-,39-,40-,41-,42-,43-,44-,45-,49-,50-,51-,52-/m0/s1.
What are the key properties of (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid?
(2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid has a molecular weight of 1745.03 g/mol, XLogP of -11.95, 58 rotatable bonds, 30 hydrogen bond donors, and 27 hydrogen bond acceptors.
Where does this data come from?
All data for (2S)-2-[[(2R)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-sulfanylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-3-sulfanylpropanoyl]amino]-4-methylpentanoic acid is sourced from PubChem (CID 25074923), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).