Structure Search


 Order By

Visit Us:Marm 2024 Celebrating Discovery

June 5th-June 8th, 2024

The Pennsylvania State University

University Park, PA


Feel free to ask about special packaging, quantities not listed, or if you can't find a specific item listed on our page.Please contact us



Capping A (THF / 2,6-Lutidine / Acetic anhydride, v/v/v = 80:10:10), emp Biotech GmbH 450mL, 28-400 thread, 2.5L, GL45 thread

CAS Number:
Molecular Formula:
Molecular Weight: 0.00
MDL Number:

 Item #PriceQuantityAdd to Cart 
Regular Price: $58.00
Your Discounted Price: $0.00
In Stock USA
Regular Price: $165.00
Your Discounted Price: $0.00
In Stock USA

Signal Word:Danger
Hazard Statements:H225, H302, H315, H318, H332, H335, H336, H351
Precautionary Statements:P201, P202, P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301 + P312, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P308 + P313, P332 + P313, P362, P370 + P378, P403 + P233, P403 + P235, P405, P501
Packing Group:II
Hazard Class:3
Flash Point:
Limited Quantities:1.0 L (0.3 gallon) (liquid)
Excepted Quantities:Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

Enter Lot No:

For each synthesis cycle, up to 1 to 2 % of free 5'-hydroxy groups remain after the phosphoramidite coupling step has been completed. By running a subsequent "Capping" step using an anhydride, these free hydroxyl groups are converted to acetates and are hindered from further chain elongation and formation of long oligonucleotides with incorrect sequences. For optimal acetylation, a solution of acetic anhydride in Tetrahydrofuran or acetonitrile (Capping A) will be mixed in situ during reaction with a catalytic acting solution of N-methylimidazole (Capping B). Additives such as pyridine and lutidine function as mild bases to enhance the efficiency of the capping reaction.

Product of emp Biotech GmbH

Size bottle:
450 mL, 28-400 thread, emp Biotech part no. NC-0701-M450.0-001
2.5 L with GL 45 thread, emp Biotech part no. NC-0701-N002.5-001

Enter Lot No:


<<  <    Page 1 of 1    >  >>