L040030

Cap A

configured for ABI

• UNSPSC Code: 12352200
• NACRES: NA.21

Properties

• type: for DNA synthesis
• Quality Level: 200
• product line: Proligo Reagents
• form: liquid
• shelf life: 365 days
• concentration: 97.0-119.0 g/L (Acetic Anhydride content, titration)
• color: clear colorless, to brownish
• compatibility: configured for ABI
• storage temp.: 2-8°C

Description

General description

Cap A solution contains acetic anhydrideanhydride, lutidine and tetrahydrofuran (THF). It is used after the phosphoramidite reaction/coupling step. The solution is configured for ABI.

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.

Preparation Note

Tetrahydrofurane / Lutidine / Acetic Anhydride 8/1/1 (v/v/v)

Safety Information

• pictograms: GHS02,GHS06,GHS08,GHS05
• signalword: Danger
• hcodes: H225,H302,H315,H318,H331,H335,H336,H351
• pcodes: P210 - P280 - P301 + P312 - P304 + P340 + P311 - P305 + P351 + P338 - P308 + P313
• 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: EUH019
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 6.1 °F
• flash_point_c: -14.4 °C