8.51087

PyClock

6-Chloro-benzotriazole-1-yloxy-tris-pyrrolidinophosphonium hexafluorophosphate Novabiochem®

Manufacturer: Sigma Aldrich

CAS Number: 893413-42-8

Synonym(S): PyClock, 6-Chloro-benzotriazole-1-yloxy-tris-pyrrolidinophosphonium hexafluorophosphate

Select a Size

Pack Size SKU Availability Price
25 G 8.51087-25-G In Stock ₹ 12,110.00
100 G 8.51087-100-G In Stock ₹ 35,429.99

8.51087 - 25 G

₹ 12,110.00

In Stock

Quantity

1

Base Price: ₹ 12,110.00

GST (18%): ₹ 2,179.80

Total Price: ₹ 14,289.80

Quality Level

200

product line

Novabiochem®

Assay

≥98.0% (HPLC)

form

powder

reaction suitability

reaction type: Coupling Reactions

manufacturer/tradename

Novabiochem®

mp

165-175 °C

application(s)

peptide synthesis

storage temp.

2-8°C

InChI

1S/C18H27ClN6OP.F6P/c19-16-7-8-17-18(15-16)25(21-20-17)26-27(22-9-1-2-10-22,23-11-3-4-12-23)24-13-5-6-14-24;1-7(2,3,4,5)6/h7-8,15H,1-6,9-14H2;/q+1;-1

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Description

  • General description: PyClocK is the 6-chloro analog of PyBOP. Reaction of protected amino acids with PyClocK in the presence of base generates the corresponding 6-chloro-1-benzotriazolyl (Cl-OBt) ester. These active esters are considerably more reactive than those produced when using PyBOP or HBTU, owing to 6-chloro-1-hydroxybenzotriazole (Cl-HOBt) being more acidic than HOBt. PyClocK is an excellent coupling reagent for situations where carboxyl activation may be sluggish, such as cyclizations and fragment condensations, as unlike imminium-based reagents such as HBTU and HATU excess PyClocK cannot cause end-capping of peptide chains. Associated Protocols and Technical ArticlesGuide to Selection of Coupling Reagents
  • Analysis Note: Color (visual): white to slight yellow to beigeAppearance of substance (visual): powderIdentity (IR): conformsAssay (HPLC, area%): ≥ 98.0 % (a/a)Solubility (5% in NMP (1-Methyl-2-pyrrolidone)): clear
  • Legal Information: Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

SAFETY INFORMATION

Pictograms

GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Precautionary Statements

P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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InChI:
1S/C9H5F3N2O2/c10-9(11,12)8(13-14-8)6-3-1-5(2-4-6)7(15)16/h1-4H,(H,15,16)