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21111-71-7

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21111-71-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21111-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,1 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21111-71:
(7*2)+(6*1)+(5*1)+(4*1)+(3*1)+(2*7)+(1*1)=47
47 % 10 = 7
So 21111-71-7 is a valid CAS Registry Number.

21111-71-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name benzoic acid,2,5-dimethylbenzene-1,4-diol

1.2 Other means of identification

Product number -
Other names 2.5-Dimethyl-hydrochinon-monobenzoat

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:21111-71-7 SDS

21111-71-7Relevant articles and documents

A short and convenient chemical route to optically pure 2-methyl chromanmethanols. Total asymmetric synthesis of β-, γ-, and δ-tocotrienols

Couladouros, Elias A.,Moutsos, Vassilios I.,Lampropoulou, Maria,Little, James L.,Hyatt, John A.

, p. 6735 - 6741 (2008/02/11)

(Chemical Equation Presented) With use of inexpensive commercially available raw materials, chromanmethanol precursors to the natural β-, γ-, and δ-tocotrienols have been prepared in high yield. Enzymatic resolution afforded chiral chromanmethanols in high enantiomeric excess. Subsequent attachment of the farnesyl side chain was high yielding, thus allowing the preparation of asymmetric β-, γ-, and δ-tocotrienols in one final step wherein simultaneous deprotection of the phenol and removal of the sulfone group occurs. This chemistry provides the first synthesis of natural-series β-tocotrienol.

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