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CAP B

CAP B structure

CAS No.

Chemical Name:: CAP B

Synonyms: CAP B

CBNumber:: CB1561966

Molecular Formula:

Molecular Weight:: 0

MDL Number:

MOL File:: Mol file

Last updated:2026-05-27 23:56:03

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CAP B Properties

Flash point	-14 °C
form	liquid
color	clear
UNSPSC Code	12352200
NACRES	NA.21

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS02, GHS05, GHS07, GHS08
Signal word	Danger
Hazard statements	H225-H302+H312-H314-H335-H351
Precautionary statements	P210-P260-P280-P305+P351+P338-P370+P378-P403+P235
target organs	Central nervous system, Respiratory system
Hazard Codes	F,C
Risk Statements	11-19-20/21/22-34-37-40
Safety Statements	16-26-36/37/39-45
RIDADR	UN 2924 8(3) / PGII
WGK Germany	2
Storage Class	3 - Flammable liquids
Hazard Classifications	Acute Tox. 4 Oral Carc. 2 Eye Dam. 1 Flam. Liq. 2 Repr. 2 Skin Corr. 1B STOT SE 3

CAP B Chemical Properties, Uses, Production

Uses

Cap B solution contains tetrahydrofuran (THF), pyridine, and N-methylimidazole (NMI). It is mixed in situ with Cap A solution during the capping (acetylation) reaction. Pyridine is applied as a mild base while NMI provides a powerful acylation catalyst.

CAP B Preparation Products And Raw materials

Raw materials

Preparation Products

CAP B Suppliers

Global Suppliers ( 15)

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
Qingdao Judian'er Technology Co., Ltd	15964234177	jiangcaixia@tsingtaofocus.com	China	143	58
Nanjing Aoze Chemical Co., Ltd.	15189842686	31735135@qq.com	China	2880	58
Anhui Weihe Chemical Technology Co., Ltd.	13505592528 13505592528	49141484@qq.com	China	2671	58

Supplier	Advantage
Shanghai Hanhong Scientific Co.,Ltd.	64
Qingdao Judian'er Technology Co., Ltd	58
Nanjing Aoze Chemical Co., Ltd.	58
Anhui Weihe Chemical Technology Co., Ltd.	58

CAP B