SQ-NHS - for fluorescence analysis, ≥50%(coupling to amines) , CAS No.154161-81-6

CAS: 154161-81-6 Cat. No.: S121505 Molecular Weight: 614.09 PubChem CID: 5095317
AVAILABLE TO ORDER
GRADE & PURITY for Fluorescence analysis ? Fluorescence-analysis grade — very low fluorescent impurities for clean spectra. Use in fluorescence assays where background interferes.
Synonyms
4-[(5-chloro-1,3,3-trimethylindol-1-ium-2-yl)methylidene]-2-[[5-(2,5-dioxopyrrolidin-1-yl)oxycarbonyl-1-ethyl-3,3-dimethylindol-2-ylidene]methyl]-3-oxocyclobuten-1-olate | DTXSID30408257 | SQ-NHS
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
1mg
S121505-1mg
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$397.90

$463.90
Save $66.00 (14.23%)
5mg
S121505-5mg
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$1,415.90

$1,651.90
Save $236.00 (14.29%)
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Why this grade

for fluorescence analysis, ≥50%(coupling to amines) for Fluorescence analysis for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

SQ-NHS contains a reactive N-hydroxysuccinimide group, which allows for coupling with amino groups. When conjugated with proteins, SQ-NHS demonstrates a high quantum yield with an absorption maximum at 640 nm and a nanosecond lifetime. Additionally, in the physiological pH range (6-9), the absorbance, emission, and lifetime of SQ-NHS are pH-independent. It is water insoluble

Specifications

Synonyms
4-[(5-chloro-1, 3, 3-trimethylindol-1-ium-2-yl)methylidene]-2-[[5-(2, 5-dioxopyrrolidin-1-yl)oxycarbonyl-1-ethyl-3, 3-dimethylindol-2-ylidene]methyl]-3-oxocyclobuten-1-olate | DTXSID30408257 | SQ-NHS
Specifications & Purity
for fluorescence analysis, ≥50%(coupling to amines)
Storage
Room temperature
Shipped In
Normal
Grade
for Fluorescence analysis
Names and Identifiers
Canonical SmilesCCN1C2=C(C=C(C=C2)C(=O)ON3C(=O)CCC3=O)C(C1=CC4=C(C(=CC5=[N+](C6=C(C5(C)C)C=C(C=C6)Cl)C)C4=O)[O-])(C)C
IUPAC Name4-[(5-chloro-1,3,3-trimethylindol-1-ium-2-yl)methylidene]-2-[[5-(2,5-dioxopyrrolidin-1-yl)oxycarbonyl-1-ethyl-3,3-dimethylindol-2-ylidene]methyl]-3-oxocyclobuten-1-olate
InChIKeyRRLJXAKQFSXTLC-UHFFFAOYSA-N
INCHI1S/C34H32ClN3O6/c1-7-37-25-10-8-18(32(43)44-38-28(39)12-13-29(38)40)14-22(25)34(4,5)27(37)17-21-30(41)20(31(21)42)16-26-33(2,3)23-15-19(35)9-11-24(23)36(26)6/h8-11,14-17H,7,12-13H2,1-6H3
Isomeric SMILES CCN1C2=C(C=C(C=C2)C(=O)ON3C(=O)CCC3=O)C(C1=CC4=C(C(=CC5=[N+](C6=C(C5(C)C)C=C(C=C6)Cl)C)C4=O)[O-])(C)C
WGK Germany 3
PubChem CID 5095317
Molecular Weight 614.09

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

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✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
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