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Melanotan I 1mg

CAT: 0628-A22742-1Size: 1 mgDry Ice: NoHazardous: No
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CAS Number
75921-69-6

Chemical Information

Afamelanotide

Afamelanotide is a first-in-class, synthetic, 13-amino acid peptide analogue of the endogenous alpha melanocyte-stimulating hormone (α-MSH). It differs structurally from its endogenous counterpart by only two amino acids - these structural differences improve biological efficacy by imparting a greater affinity for its target and a longer biological half-life. Afamelanotide is currently the only approved drug therapy used in the management of erythropoietic protoporphyria, having received approval in the EU in December 2014 and subsequent FDA approval in October 2019. Despite its relatively recent approval, afamelanotide has been available for use as an orphan drug in both the US and EU since 2008.

CAS Number75921-69-6
PubChem CID16197727
IUPAC Name(4S)-4-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-acetamido-3-hydroxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-hydroxypropanoyl]amino]hexanoyl]amino]-5-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2S)-1-[[2-[[(2S)-6-amino-1-[(2S)-2-[[(2S)-1-amino-3-methyl-1-oxobutan-2-yl]carbamoyl]pyrrolidin-1-yl]-1-oxohexan-2-yl]amino]-2-oxoethyl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]amino]-5-oxopentanoic acid
Molecular FormulaC78H111N21O19
Molecular Weight1646.8
XLogP-3.5
Topological Polar Surface Area643
Hydrogen Bond Donor Count23
Hydrogen Bond Acceptor Count22
Rotatable Bond Count51
Heavy Atom Count118
Formal Charge0
Complexity3360
SMILES
CCCC[C@@H](C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CC1=CN=CN1)C(=O)N[C@H](CC2=CC=CC=C2)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CC3=CNC4=CC=CC=C43)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N5CCC[C@H]5C(=O)N[C@@H](C(C)C)C(=O)N)NC(=O)[C@H](CO)NC(=O)[C@H](CC6=CC=C(C=C6)O)NC(=O)[C@H](CO)NC(=O)C
InChI
InChI=1S/C78H111N21O19/c1-5-6-19-52(91-75(116)61(41-101)97-72(113)57(34-46-24-26-49(103)27-25-46)94-74(115)60(40-100)88-44(4)102)68(109)92-54(28-29-64(105)106)70(111)96-59(36-48-38-83-42-87-48)73(114)93-56(33-45-16-8-7-9-17-45)71(112)90-53(22-14-31-84-78(81)82)69(110)95-58(35-47-37-85-51-20-11-10-18-50(47)51)67(108)86-39-63(104)89-55(21-12-13-30-79)77(118)99-32-15-23-62(99)76(117)98-65(43(2)3)66(80)107/h7-11,16-18,20,24-27,37-38,42-43,52-62,65,85,100-101,103H,5-6,12-15,19,21-23,28-36,39-41,79H2,1-4H3,(H2,80,107)(H,83,87)(H,86,108)(H,88,102)(H,89,104)(H,90,112)(H,91,116)(H,92,109)(H,93,114)(H,94,115)(H,95,110)(H,96,111)(H,97,113)(H,98,117)(H,105,106)(H4,81,82,84)/t52-,53-,54-,55-,56+,57-,58-,59-,60-,61-,62-,65-/m0/s1
InChIKey
UAHFGYDRQSXQEB-LEBBXHLNSA-N
Chemical Structure
2D Structure
2D structure of Afamelanotide
CAS: 75921-69-6
CID: 16197727
Formula: C78H111N21O19
MW: 1646.8
Interactive 3D Structure
Loading 3D structure...
View on PubChemRaw 3D data
Computed Properties
PropertyValue
Molecular Weight1646.8
XLogP3-3.5
Hydrogen Bond Donor Count23
Hydrogen Bond Acceptor Count22
Rotatable Bond Count51
Exact Mass1645.83651040
Monoisotopic Mass1645.83651040
Topological Polar Surface Area643 Ų
Heavy Atom Count118
Formal Charge0
Complexity3360
Isotope Atom Count0
Defined Atom Stereocenter Count12
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count1
Compound Is CanonicalizedYes

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