Active ester

Active ester

NHS ester-activated PEGylation polymer can react with primary amines at pH 7.2 to 9 to yield a stable (covalent) amide bond. The reaction releases N-hydroxysuccinimide (NHS). Nucleophilic reaction between amine and active ester is most commonly performed in phosphate, carbonate-bicarbonate, HEPES or borate buffers at pH 7.2 to 8.5 for 0.5 to 4 h at room temperature or 4°C.

Catalog Product Name Structure M.W. Purity Pricing
Azido-PEG-NHS ester
BP-40967Azido-PEG-NHS ester, MW 2,000Molecular structure of the compound: Azido-PEG-NHS ester, MW 2,00095%Pricing
BP-40968Azido-PEG-NHS ester, MW 5,000Molecular structure of the compound: Azido-PEG-NHS ester, MW 5,00095%Pricing
Azido-PEG-CH2CO2-NHS
BP-41912Azido-PEG-CH2CO2-NHS, MW 10,000Molecular structure of the compound: Azido-PEG-CH2CO2-NHS, MW 10,00090%Pricing
DSPE-PEG-NHS
BP-26254DSPE-PEG-NHS, MW 600Molecular structure of the compound: DSPE-PEG-NHS, MW 600Pricing
BP-26220DSPE-PEG-NHS, MW 1,000Molecular structure of the compound: DSPE-PEG-NHS, MW 1,000Pricing
BP-26221DSPE-PEG-NHS, MW 2,000Molecular structure of the compound: DSPE-PEG-NHS, MW 2,000Pricing
BP-26223DSPE-PEG-NHS, MW 5,000Molecular structure of the compound: DSPE-PEG-NHS, MW 5,000Pricing
BP-41824DSPE-PEG-NHS ester, MW 2,000Molecular structure of the compound: DSPE-PEG-NHS ester, MW 2,00090%Pricing
Stearic acid-PEG-NHS
BP-26272Stearic acid-PEG-NHS, MW 1,000Molecular structure of the compound: Stearic acid-PEG-NHS, MW 1,000Pricing
BP-26273Stearic acid-PEG-NHS, MW 2,000Molecular structure of the compound: Stearic acid-PEG-NHS, MW 2,000Pricing
BP-26274Stearic acid-PEG-NHS, MW 3,400Molecular structure of the compound: Stearic acid-PEG-NHS, MW 3,400Pricing
Propargyl-PEG-NHS ester
BP-41471Propargyl-PEG-NHS ester, MW 2,000Molecular structure of the compound: Propargyl-PEG-NHS ester, MW 2,00095%Pricing
DBCO-PEG-NHS ester
BP-29781DBCO-PEG-NHS ester, MW 2,000Molecular structure of the compound: DBCO-PEG-NHS ester, MW 2,00085%Pricing
BP-29773DBCO-PEG-NHS ester, MW 3,400Molecular structure of the compound: DBCO-PEG-NHS ester, MW 3,40085%Pricing
BP-29777DBCO-PEG-NHS ester, MW 5,000Molecular structure of the compound: DBCO-PEG-NHS ester, MW 5,00085%Pricing
Biotin-PEG-NHS
BP-29241Biotin-PEG-NHS, MW 1,000Molecular structure of the compound: Biotin-PEG-NHS, MW 1,000Pricing
BP-29242Biotin-PEG-NHS, MW 2,000Molecular structure of the compound: Biotin-PEG-NHS, MW 2,000Pricing
BP-29244Biotin-PEG-NHS, MW 5,000Molecular structure of the compound: Biotin-PEG-NHS, MW 5,000Pricing
Fmoc-N-amido-PEG-NHS ester
BP-25212Fmoc-N-amido-PEG-NHS ester, MW 2,000Molecular structure of the compound: Fmoc-N-amido-PEG-NHS ester, MW 2,000Pricing
Fmoc-N-amido-PEG-Succinimidyl Valerate
BP-25213Fmoc-N-amido-PEG-Succinimidyl Valerate, MW 3,400Molecular structure of the compound: Fmoc-N-amido-PEG-Succinimidyl Valerate, MW 3,400Pricing
m-PEG-NHS ester
BP-28350m-PEG-NHS ester, MW 2,000Molecular structure of the compound: m-PEG-NHS ester, MW 2,000Pricing
BP-24177m-PEG-NHS ester, MW 5,000Molecular structure of the compound: m-PEG-NHS ester, MW 5,000Pricing
BP-24293m-PEG-NHS ester, MW 10,000Molecular structure of the compound: m-PEG-NHS ester, MW 10,000Pricing
BP-24311m-PEG-NHS ester, MW 20,000Molecular structure of the compound: m-PEG-NHS ester, MW 20,000Pricing
BP-40921m-PEG-NHS ester, MW 30,000Molecular structure of the compound: m-PEG-NHS ester, MW 30,000Pricing
m-PEG-Lys-NHS ester
BP-23761m-PEG-Lys-NHS ester, MW 20,000Molecular structure of the compound: m-PEG-Lys-NHS ester, MW 20,000Pricing
BP-23762m-PEG-Lys-NHS ester, MW 40,000Molecular structure of the compound: m-PEG-Lys-NHS ester, MW 40,000Pricing
m-PEG-Succinimidyl Carbonate
BP-28765m-PEG-Succinimidyl Carbonate, MW 750Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 750Pricing
BP-28766m-PEG-Succinimidyl Carbonate, MW 1,000Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 1,000Pricing
BP-25243m-PEG-Succinimidyl Carbonate, MW 2,000Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 2,000Pricing
BP-25250m-PEG-Succinimidyl Carbonate, MW 5,000Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 5,000Pricing
BP-25232m-PEG-Succinimidyl Carbonate, MW 10,000Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 10,000Pricing
BP-25238m-PEG-Succinimidyl Carbonate, MW 20,000Molecular structure of the compound: m-PEG-Succinimidyl Carbonate, MW 20,000Pricing
m-PEG-Succinimidyl Succinate
BP-25245m-PEG-Succinimidyl Succinate, MW 2,000Molecular structure of the compound: m-PEG-Succinimidyl Succinate, MW 2,000Pricing
BP-23397m-PEG-Succinimidyl Succinate, MW 5,000Molecular structure of the compound: m-PEG-Succinimidyl Succinate, MW 5,000Pricing
BP-25462m-PEG-Succinimidyl Succinate, MW 10,000Molecular structure of the compound: m-PEG-Succinimidyl Succinate, MW 10,000Pricing
BP-25240m-PEG-Succinimidyl Succinate, MW 20,000Molecular structure of the compound: m-PEG-Succinimidyl Succinate, MW 20,000Pricing
m-PEG-Succinimidyl Amido Succinate
BP-28764m-PEG-Succinimidyl Amido Succinate, MW 1,000Molecular structure of the compound: m-PEG-Succinimidyl Amido Succinate, MW 1,000Pricing
BP-28763m-PEG-Succinimidyl Amido Succinate, MW 5,000Molecular structure of the compound: m-PEG-Succinimidyl Amido Succinate, MW 5,000Pricing
BP-25231m-PEG-Succinimidyl Amido Succinate, MW 10,000Molecular structure of the compound: m-PEG-Succinimidyl Amido Succinate, MW 10,000Pricing
BP-25237m-PEG-Succinimidyl Amido Succinate, MW 20,000Molecular structure of the compound: m-PEG-Succinimidyl Amido Succinate, MW 20,000Pricing
m-PEG-Succinimidyl Glutarate
BP-28348m-PEG-Succinimidyl Glutarate, MW 2,000Molecular structure of the compound: m-PEG-Succinimidyl Glutarate, MW 2,000Pricing
BP-25251m-PEG-Succinimidyl Glutarate, MW 5,000Molecular structure of the compound: m-PEG-Succinimidyl Glutarate, MW 5,000Pricing
BP-28349m-PEG-Succinimidyl Glutarate, MW 10,000Molecular structure of the compound: m-PEG-Succinimidyl Glutarate, MW 10,000Pricing
MPEG-GAS
BP-29089MPEG-GAS, MW 1,000Molecular structure of the compound: MPEG-GAS, MW 1,000Pricing
m-PEG-Succinimidyl Valerate
BP-25246m-PEG-Succinimidyl Valerate, MW 2,000Molecular structure of the compound: m-PEG-Succinimidyl Valerate, MW 2,000Pricing
BP-25253m-PEG-Succinimidyl Valerate, MW 5,000Molecular structure of the compound: m-PEG-Succinimidyl Valerate, MW 5,000Pricing
BP-25234m-PEG-Succinimidyl Valerate, MW 10,000Molecular structure of the compound: m-PEG-Succinimidyl Valerate, MW 10,000Pricing
BP-25241m-PEG-Succinimidyl Valerate, MW 20,000Molecular structure of the compound: m-PEG-Succinimidyl Valerate, MW 20,000Pricing
Benzyl-PEG-Succinimidyl Carbonate
BP-40380Benzyl-PEG-Succinimidyl Carbonate, MW 2,000Molecular structure of the compound: Benzyl-PEG-Succinimidyl Carbonate, MW 2,00097%Pricing
bis-succinimidyl carbonate-PEG
BP-29770bis-succinimidyl carbonate-PEG, MW 2,000Molecular structure of the compound: bis-succinimidyl carbonate-PEG, MW 2,000Pricing
PEG-bis-Succinimidyl Oxyglutaryl
BP-28769PEG-bis-Succinimidyl Oxyglutaryl, MW 1,000Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 1,000Pricing
BP-28770PEG-bis-Succinimidyl Oxyglutaryl, MW 2,000Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 2,000Pricing
BP-28771PEG-bis-Succinimidyl Oxyglutaryl, MW 3,400Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 3,400Pricing
BP-25317PEG-bis-Succinimidyl Oxyglutaryl, MW 5,000Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 5,000Pricing
BP-25316PEG-bis-Succinimidyl Oxyglutaryl, MW 10,000Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 10,000Pricing
BP-28772PEG-bis-Succinimidyl Oxyglutaryl, MW 20,000Molecular structure of the compound: PEG-bis-Succinimidyl Oxyglutaryl, MW 20,000Pricing
PEG-bis-Succinimidyl Succinate
BP-28773PEG-bis-Succinimidyl Succinate, MW 1,000Molecular structure of the compound: PEG-bis-Succinimidyl Succinate, MW 1,000Pricing
BP-25319PEG-bis-Succinimidyl Succinate, MW 2,000Molecular structure of the compound: PEG-bis-Succinimidyl Succinate, MW 2,000Pricing
BP-25320PEG-bis-Succinimidyl Succinate, MW 3,400Molecular structure of the compound: PEG-bis-Succinimidyl Succinate, MW 3,400Pricing
BP-28774PEG-bis-Succinimidyl Succinate, MW 5,000Molecular structure of the compound: PEG-bis-Succinimidyl Succinate, MW 5,000Pricing
BP-25318PEG-bis-Succinimidyl Succinate, MW 10,000Molecular structure of the compound: PEG-bis-Succinimidyl Succinate, MW 10,000Pricing
PEG-bis-Succinimidyl Amido Succinate
BP-25314PEG-bis-Succinimidyl Amido Succinate, MW 2,000Molecular structure of the compound: PEG-bis-Succinimidyl Amido Succinate, MW 2,000Pricing
BP-25315PEG-bis-Succinimidyl Amido Succinate, MW 3,400Molecular structure of the compound: PEG-bis-Succinimidyl Amido Succinate, MW 3,400Pricing
BP-28768PEG-bis-Succinimidyl Amido Succinate, MW 5,000Molecular structure of the compound: PEG-bis-Succinimidyl Amido Succinate, MW 5,000Pricing
BP-25312PEG-bis-Succinimidyl Amido Succinate, MW 10,000Molecular structure of the compound: PEG-bis-Succinimidyl Amido Succinate, MW 10,000Pricing
PEG-bis-Succinimidyl Valerate
BP-25322PEG-bis-Succinimidyl Valerate, MW 3,400Molecular structure of the compound: PEG-bis-Succinimidyl Valerate, MW 3,400Pricing
BP-25323PEG-bis-Succinimidyl Valerate, MW 5,000Molecular structure of the compound: PEG-bis-Succinimidyl Valerate, MW 5,000Pricing
Bis-PEG-TFP ester
BP-23964Bis-PEG-TFP ester, MW 5,000Molecular structure of the compound: Bis-PEG-TFP ester, MW 5,000Pricing
Mal-PEG-SCM
BP-29084Mal-PEG-SCM, MW 1,000Molecular structure of the compound: Mal-PEG-SCM, MW 1,000Pricing
BP-29085Mal-PEG-SCM, MW 2,000Molecular structure of the compound: Mal-PEG-SCM, MW 2,000Pricing
Mal-PEG-Succinimidyl Valerate
BP-25226Mal-PEG-Succinimidyl Valerate, MW 3,400Molecular structure of the compound: Mal-PEG-Succinimidyl Valerate, MW 3,400Pricing
BP-25227Mal-PEG-Succinimidyl Valerate, MW 5,000Molecular structure of the compound: Mal-PEG-Succinimidyl Valerate, MW 5,000Pricing
BP-23402Mal-PEG-Succinimidyl Valerate, MW 20,000Molecular structure of the compound: Mal-PEG-Succinimidyl Valerate, MW 20,000Pricing
Succinimidyl Carbonate-PEG-CH2COOH
BP-25202Succinimidyl Carbonate-PEG-CH2COOH, MW 2,000Molecular structure of the compound: Succinimidyl Carbonate-PEG-CH2COOH, MW 2,000Pricing
BP-25203Succinimidyl Carbonate-PEG-CH2COOH, MW 3,400Molecular structure of the compound: Succinimidyl Carbonate-PEG-CH2COOH, MW 3,400Pricing
BP-25204Succinimidyl Carbonate-PEG-CH2COOH, MW 5,000Molecular structure of the compound: Succinimidyl Carbonate-PEG-CH2COOH, MW 5,000Pricing
OPSS-PEG-NHS
BP-29094OPSS-PEG-NHS, MW 1,000Molecular structure of the compound: OPSS-PEG-NHS, MW 1,000Pricing
BP-29098OPSS-PEG-NHS, MW 10,000Molecular structure of the compound: OPSS-PEG-NHS, MW 10,000Pricing
SPDP-PEG-Succinimidyl Valerate
BP-25336SPDP-PEG-Succinimidyl Valerate, MW 5,000Molecular structure of the compound: SPDP-PEG-Succinimidyl Valerate, MW 5,000Pricing
LA-PEG-NHS
BP-29080LA-PEG-NHS, MW 1,000Molecular structure of the compound: LA-PEG-NHS, MW 1,000Pricing
t-Boc-N-amido-PEG-Succinimidyl Carbonate
BP-40115t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 2,000Molecular structure of the compound: t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 2,00098%Pricing
BP-25339t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 3,400Molecular structure of the compound: t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 3,400Pricing
BP-40116t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 5,000Molecular structure of the compound: t-Boc-N-amido-PEG-Succinimidyl Carbonate, MW 5,00098%Pricing
t-Boc-N-amido-PEG-Succinimidyl Valerate
BP-25340t-Boc-N-amido-PEG-Succinimidyl Valerate, MW 3,400Molecular structure of the compound: t-Boc-N-amido-PEG-Succinimidyl Valerate, MW 3,400Pricing
t-butyl ester-PEG-succinimidyl carbonate
BP-41846t-butyl ester-PEG-succinimidyl carbonate, MW 5,000Molecular structure of the compound: t-butyl ester-PEG-succinimidyl carbonate, MW 5,00090%Pricing
Folate-PEG-CH2CO2-NHS
BP-25944Folate-PEG-CH2CO2-NHS, MW 1,000Molecular structure of the compound: Folate-PEG-CH2CO2-NHS, MW 1,000Pricing
BP-25945Folate-PEG-CH2CO2-NHS, MW 2,000Molecular structure of the compound: Folate-PEG-CH2CO2-NHS, MW 2,000Pricing
BP-25946Folate-PEG-CH2CO2-NHS, MW 3,400Molecular structure of the compound: Folate-PEG-CH2CO2-NHS, MW 3,400Pricing
BP-25948Folate-PEG-CH2CO2-NHS, MW 10,000Molecular structure of the compound: Folate-PEG-CH2CO2-NHS, MW 10,000Pricing
HO-PEG-NHS ester
BP-40865HO-PEG-NHS ester, MW 2,000Molecular structure of the compound: HO-PEG-NHS ester, MW 2,00098%Pricing
BP-40735HO-PEG-NHS ester, MW 5,000Molecular structure of the compound: HO-PEG-NHS ester, MW 5,00098%Pricing
BP-26067HO-PEG-CH2CO2-NHS, MW 2,000Molecular structure of the compound: HO-PEG-CH2CO2-NHS, MW 2,000Pricing
BP-26068HO-PEG-CH2CO2-NHS, MW 3,400Molecular structure of the compound: HO-PEG-CH2CO2-NHS, MW 3,400Pricing
BP-26069HO-PEG-CH2CO2-NHS, MW 5,000Molecular structure of the compound: HO-PEG-CH2CO2-NHS, MW 5,000Pricing
HO-PEG-Succinimidyl Carbonate
BP-40395HO-PEG-Succinimidyl Carbonate, MW 2,000Molecular structure of the compound: HO-PEG-Succinimidyl Carbonate, MW 2,00098%Pricing
BP Fluor 647-PEG-CH2CO2-NHS
BP-41128BP Fluor 647-PEG-CH2CO2-NHS, MW 2,000Molecular structure of the compound: BP Fluor 647-PEG-CH2CO2-NHS, MW 2,00095%Pricing
Cy3-PEG-CH2CO2-NHS
BP-41032Cy3-PEG-CH2CO2-NHS, MW 2,000Molecular structure of the compound: Cy3-PEG-CH2CO2-NHS, MW 2,00090%Pricing
Cy5-PEG-CH2COO-NHS
BP-41024Cy5-PEG-CH2COO-NHS, MW 2,000Molecular structure of the compound: Cy5-PEG-CH2COO-NHS, MW 2,00090%Pricing
RhB-PEG-NHS
BP-29111RhB-PEG-NHS, MW 2,000Molecular structure of the compound: RhB-PEG-NHS, MW 2,000Pricing
BP-29113RhB-PEG-NHS, MW 5,000Molecular structure of the compound: RhB-PEG-NHS, MW 5,000Pricing
4arm-PEG-Succinimidyl Carbonate
BP-283574arm-PEG-Succinimidyl Carbonate, MW 2,000Molecular structure of the compound: 4arm-PEG-Succinimidyl Carbonate, MW 2,000Pricing
BP-283584arm-PEG-Succinimidyl Carbonate, MW 5,000Molecular structure of the compound: 4arm-PEG-Succinimidyl Carbonate, MW 5,000Pricing
BP-251724arm-PEG-Succinimidyl Carbonate, MW 10,000Molecular structure of the compound: 4arm-PEG-Succinimidyl Carbonate, MW 10,000Pricing
4arm-Succinimidyl Glutarate-PEG
BP-251764arm-Succinimidyl Glutarate-PEG, MW 10,000Molecular structure of the compound: 4arm-Succinimidyl Glutarate-PEG, MW 10,000Pricing
BP-251774arm-Succinimidyl Glutarate-PEG, MW 20,000Molecular structure of the compound: 4arm-Succinimidyl Glutarate-PEG, MW 20,000Pricing
4arm-Succinimidyl Succinate-PEG
BP-287604arm-Succinimidyl Succinate-PEG, MW 2,000Molecular structure of the compound: 4arm-Succinimidyl Succinate-PEG, MW 2,000Pricing
BP-287614arm-Succinimidyl Succinate-PEG, MW 5,000Molecular structure of the compound: 4arm-Succinimidyl Succinate-PEG, MW 5,000Pricing
BP-251784arm-Succinimidyl Succinate-PEG, MW 10,000Molecular structure of the compound: 4arm-Succinimidyl Succinate-PEG, MW 10,000Pricing
BP-287624arm-Succinimidyl Succinate-PEG, MW 20,000Molecular structure of the compound: 4arm-Succinimidyl Succinate-PEG, MW 20,000Pricing
4arm-PEG-Succinimidyl Amido Succinate
BP-251704arm-PEG-Succinimidyl Amido Succinate, MW 10,000Molecular structure of the compound: 4arm-PEG-Succinimidyl Amido Succinate, MW 10,000Pricing
BP-251714arm-PEG-Succinimidyl Amido Succinate, MW 20,000Molecular structure of the compound: 4arm-PEG-Succinimidyl Amido Succinate, MW 20,000Pricing
8-arm PEG-SCM
BP-290558-arm PEG-SCM, MW 10,000Molecular structure of the compound: 8-arm PEG-SCM, MW 10,000Pricing
8-arm PEG-GAS
BP-290518-arm PEG-GAS, MW 40,000Molecular structure of the compound: 8-arm PEG-GAS, MW 40,000Pricing