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Merck
CN

L040082

Cap A

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About This Item

NACRES:
NA.21
UNSPSC Code:
12352200
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type

for DNA synthesis

Quality Level

product line

Proligo Reagents

Preparation Note

Acetic Anhydride / Tetrahydrofurane 9.1/90.9 (v/v)

Other Notes

Cap A solution, containing acetic anhydride and tetrahydrofuran (THF), is used after the phosphoramidite reaction/coupling step. This solution aborts chains bearing unreacted 5′hydroxyl groups due to failure of reaction with activated phosphoramidite (typically, 1 to 2% of growing oligonucleotide chains in each synthesis cycle). These unreacted 5′hydroxyl groups are capped with an acetyl group and thus rendered unreactive for subsequent synthesis steps.


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signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

supp_hazards

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

6.1 °F

flash_point_c

-14.4 °C

Regulatory Information

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Global Trade Item Number

SKUGTIN
L040082-45L04061838216007