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999-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 999-75-7 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 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 999-75:
127 % 10 = 7
So 999-75-7 is a valid CAS Registry Number.



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


1.1 GHS Product identifier

Product name ethane,iodozinc(1+)

1.2 Other means of identification

Product number -
Other names Ethylzinkiodid

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:999-75-7 SDS

999-75-7Upstream product

999-75-7Relevant articles and documents

Spectroscopic characterization of (iodomethyl)zinc reagents involved in stereoselective reactions: Spectroscopic evidence that IZnCH2I Is Not Zn(CH2I)2 + ZnI2 in the presence of an ether

Charette, André B.,Marcoux, Jean-Fran?ois

, p. 4539 - 4549 (1996)

We have shown that low-temperature 13C NMR spectroscopy is an extremely powerful technique for characterizing the (iodomethyl)zinc-derived reagents involved in the cyclopropanation reactions. This technique has allowed us to spectroscopically characterize and unambigously differentiate the Furukawa reagent (EtZnCH2I), the Simmons - Smith reagent (IZnCH2I), and the Wittig reagent (Zn(CH2I)2). Unique spectra are obtained for each of these reagents when they are complexed to a chiral diether. We have also demonstrated that TZnCH2I is not converted into Zn(CH2I)2 + ZnI2 in CD2Cl2 in the presence of a chiral complexing agent. Furukawa's reagent "EtZnCH2I", however, is in equilibrium with Et2Zn and Zn(CH2I)2, and it eventually decomposes into PrZnI and EtZnI at room temperature. The decomposition of Zn(CH2I)2 into IZnCH2I and of IZnCH2I into ZnI2 was monitored by NMR. We have also demonstrated that the general trends observed for the various equilibria involving (iodomelhyl)zinc-derived reagents follow those observed with ethylzinc-derived organometallic compounds.

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