N-Biotinyl-NH-(PEG)2-COOH

Name: N-Biotinyl-NH-(PEG)2-COOH
Brand: BOC Sciences
Rating: 5 (1 reviews)

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Category	Biotin PEG
Catalog NO.	BPG-4857
Product Name	N-Biotinyl-NH-(PEG)2-COOH
CAS	1202761-21-4
Molecular Formula	C25H44N4O8S
Molecular Weight	560.71

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Description	N-Biotinyl-NH-(PEG)2-COOH is a biotin derivative with a PEG2 linker and a carboxyl group. It is used in bioconjugation for attaching biotin to various molecules via its carboxyl group, enabling applications in surface functionalization, protein labeling, and drug delivery.
Synonyms	O-(N-Biotinyl-3-aminopropyl)-O'-(N-glutaryl-3-aminopropyl)-diethyleneglycol; COOH-PEG-Biotin; Biotinyl-TOTA-glutaramic acid; 25-[(3aS,4S,6aR)-Hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-5,21-dioxo-10,13,16-trioxa-6,20-diazapentacosanoic acid; Biotinyl-NH-PEG3-C3-amido-C3-COOH; 5,21-Dioxo-25-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-10,13,16-trioxa-6,20-diazapentacosan-1-oic acid
IUPAC Name	5-[3-[2-[2-[3-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]propoxy]ethoxy]ethoxy]propylamino]-5-oxopentanoic acid
SMILES	C1[C@H]2[C@@H]([C@@H](S1)CCCCC(=O)NCCCOCCOCCOCCCNC(=O)CCCC(=O)O)NC(=O)N2
InChI	InChI=1S/C25H44N4O8S/c30-21(7-2-1-6-20-24-19(18-38-20)28-25(34)29-24)26-10-4-12-35-14-16-37-17-15-36-13-5-11-27-22(31)8-3-9-23(32)33/h19-20,24H,1-18H2,(H,26,30)(H,27,31)(H,32,33)(H2,28,29,34)/t19-,20-,24-/m0/s1
InChIKey	KUWCOOYXVSTSME-SKPFHBQLSA-N
Boiling Point	893.4±65.0 °C at 760 mmHg
Purity	>98%
Density	1.189±0.06 g/cm3
Solubility	Soluble in DMSO
Related CAS	1205744-09-7 (DIPEA salt)
Appearance	White to off-white solid
Storage	Store at -20 °C

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