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Bis[N,N-bis(2-chloroethyl)carbamic acid](1,2-diethyl-1,2-ethenediyl)di(4,1-phenylene) ester, also known as Sulfur mustard or Yperite, is a highly toxic chemical warfare agent. It is an oily, colorless liquid with a faint garlic-like odor. Bis[N,N-bis(2-chloroethyl)carbamic acid](1,2-diethyl-1,2-ethenediyl)di(4,1-phenylene) ester is a bis-(2-chloroethyl)ethylamine derivative, which means it contains two chloroethyl groups attached to an ethylamine backbone. The chemical structure consists of a central 1,2-diethyl-1,2-ethenediyl (ethylene) bridge, with two 4,1-phenylene (phenyl) groups attached to it, forming an ester linkage with the carbamic acid groups. Sulfur mustard is known for its severe vesicant properties, causing severe skin burns, eye damage, and respiratory issues upon exposure. It was first used as a chemical weapon during World War I and remains a significant concern in the context of chemical warfare and terrorism.

991-23-1

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991-23-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 991-23-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,9 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 991-23:
(5*9)+(4*9)+(3*1)+(2*2)+(1*3)=91
91 % 10 = 1
So 991-23-1 is a valid CAS Registry Number.
InChI:InChI=1/C28H34Cl4N2O4/c1-3-25(21-5-9-23(10-6-21)37-27(35)33(17-13-29)18-14-30)26(4-2)22-7-11-24(12-8-22)38-28(36)34(19-15-31)20-16-32/h5-12H,3-4,13-20H2,1-2H3

991-23-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name [4-[(E)-4-[4-[bis(2-chloroethyl)carbamoyloxy]phenyl]hex-3-en-3-yl]phenyl] N,N-bis(2-chloroethyl)carbamate

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:991-23-1 SDS

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