Merck
  • L040031
All Photos(1)

L040031

Sigma-Aldrich

Cap A

All Photos(1)

type

for DNA synthesis

Quality Level

200

product line

Proligo Reagents

concentration

97.0-119.0 g/L (acetic anhydride, titration)

color

clear colorlessto brownish

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This Item
L040050L040082L040030
Sigma-Aldrich

Sigma-Aldrich

L040031

Cap A

Sigma-Aldrich

Sigma-Aldrich

L040050

Cap A

Sigma-Aldrich

Sigma-Aldrich

L040082

Cap A

Sigma-Aldrich

Sigma-Aldrich

L040030

Cap A

type

for DNA synthesis

type

for DNA synthesis

type

for DNA synthesis

type

for DNA synthesis

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

concentration

97.0-119.0 g/L (acetic anhydride, titration)

concentration

-

concentration

-

concentration

97.0-119.0 g/L (Acetic Anhydride content, titration)

color

clear colorlessto brownish

color

clear

color

-

color

clear colorless, to brownish

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

General description

Cap A solution consists of acetic anhydrideanhydride, lutidine, and tetrahydrofuran (THF).

Application

Cap A solution is used after the phosphoramidite reaction/coupling step.

Biochem/physiol Actions

Cap A 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.

Signal Word

Danger

Hazard Classifications

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

Supplementary Hazards

EUH019

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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705578-5MG-PW

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