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NHS-PEG4-Lys-(PEG4-biotin)2

Catalog Number MDP360
Molecular Weight 1437.72g/mole
Formula C63H108N10O23S2
PEG Spacer 40 and 35 atoms and 43.4 and 41.7 , resp.

NHS-S-S-PEG4-biotin

Catalog Number MDP194
CAS Number 1260247-51-5
Molecular Weight 751.94g/mole
Formula C30H49N5O11S3
PEG Spacer 24 atoms and 28.7 

PEG12 SATA(S-acetyl-PEG12-NHS ester)

Catalog Number MDP852
CAS Number 1334169-95-7
Molecular Weight 773.88g/mole
Formula C33H59NO17S
PEG Spacer 39 atoms and 46.8 

PEG12-biotin acid

Catalog Number MDP197
CAS Number 948595-11-7
Molecular Weight 844.02g/mole
Formula C37H69N3O16S
PEG Spacer 40 atoms and 47.6 

PEG12-SATA acid (S-acetyl-PEG12-acid)

Catalog Number MDP851
CAS Number 956497-30-6
Molecular Weight 676.81g/mole
Formula C29H56O15S
PEG Spacer 39 atoms and 46.8

PEG16 SATA acid(S-acetyl-PEG16-acid)

Catalog Number MDP854
CAS Number 956497-30-6
Molecular Weight 853.02g/mole
Formula C37H72O19S
PEG Spacer 51 atoms and 61.0

PEG16 SATA(S-acetyl-PEG16-NHS ester)

Catalog Number MDP855
CAS Number 1334169-95-7
Molecular Weight 950.09g/mole
Formula C41H75NO21S
PEG Spacer 51 atoms and 61.0 

PEG20 SATA acid(S-acetyl-PEG20-acid)

Catalog Number MDP859
CAS Number 956497-30-6
Molecular Weight 1029.23g/mole
Formula C45H88O23S 
PEG Spacer 63 atoms and 75.5

PEG20 SATA(S-acetyl-PEG20-NHS ester)

Catalog Number MDP860
CAS Number 1334169-95-7
Molecular Weight 1126.30g/mole
Formula C49H91NO25S
PEG Spacer 63 atoms and 75.5

PEG24-biotin acid

Catalog Number MDP773
CAS Number 721431-18-1
Molecular Weight 1372.65g/mole
Formula C61H117N3O28S
PEG Spacer 76 atoms and 95.7 

PEG4-SATA acid(S-acetyl-PEG4-acid)

Catalog Number MDP180
CAS Number 1263044-79-6
Molecular Weight 324.39g/mole
Formula C13H24O7S
PEG Spacer 16 atoms and 18.3

PEG4-SATA(S-acetyl-PEG4-NHS ester)

Catalog Number MDP181
CAS Number 937025-17-7
Molecular Weight 421.46g/mole
Formula C17H27NO9S
PEG Spacer 16 atoms and 18.3

PEG48-biotin acid

Catalog Number MDP776
CAS Number 721431-18-1
Molecular Weight 2500.99g/mole
Formula C112H218N4O53S
PEG Spacer 157 atoms and 187.8 

PEG8-SATA acid(S-acetyl-PEG8-acid)

Catalog Number MDP182
CAS Number 1334177-83-1
Molecular Weight 500.60g/mole
Formula C21H40O11S
PEG Spacer 28 atoms and 32.5

PEG8-SATA(S-acetyl-PEG8-NHS ester)

Catalog Number MDP184
CAS Number 1070798-99-0
Molecular Weight 597.67g/mole
Formula C25H43NO13S
PEG Spacer 28 atoms and 32.5

Thiol-PEG12-acid

Catalog Number MDP850
CAS Number 1032347-93-5
Molecular Weight 634.77g/mole
Formula C27H54O14S
PEG Spacer 39 atoms and 46.8  approx.