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820250-67-7

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820250-67-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 820250-67-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,0,2,5 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 820250-67:
(8*8)+(7*2)+(6*0)+(5*2)+(4*5)+(3*0)+(2*6)+(1*7)=127
127 % 10 = 7
So 820250-67-7 is a valid CAS Registry Number.

820250-67-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name (E)-4-butyl-1-(4-methoxycarbonylphenyl)-5-tributylstannyl-1,5-hexadien-3-one

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:820250-67-7 SDS

820250-67-7Downstream Products

820250-67-7Relevant articles and documents

Nickel-catalyzed acylstannylation and alkynylstannylation of 1,2-dienes

Nakao, Yoshiaki,Shirakawa, Eiji,Tsuchimoto, Teruhisa,Hiyama, Tamejiro

, p. 3701 - 3721 (2007/10/03)

Carbostannylation of 1,2-dienes using acyl- and alkynylstannanes was achieved by means of nickel catalysis. In particular, acylstannylation of 1,2-dienes could be carried out with bis(1,5-cyclooctadiene)nickel [Ni(cod) 2] and acylstannanes to give selectively α-acylmethyl(vinyl) stannanes. The reaction was also applicable to acylstannanes prepared in situ by protonolysis of α-alkoxyalkenylstannanes or by reactions of α-silyloxyvinylstannanes with aldehyde acetals. For alkynylstannylation, a combination of Ni(cod)2 and 1,3-bis(diphenylphosphino)propane (dppp) was found to be effective to afford α-alkynylmethyl(vinyl)stannanes, whereas the Ni(cod)2-1,3-bis(dimethylphosphino)propane (dmpp) catalyst switched the regioselectivity to give (Z)-α- alkynylmethyl(alkenyl)stannanes. The acylstannylation products were successfully converted into various conjugated or unconjugated enones by a combination of cross-coupling and NaH-catalyzed isomerization. The alkynylstannylation products were transformed by cross- or homo-coupling reactions to various enynes or 2,3-bis(alkynylmethyl)-1,3-dienes, versatile precursors for variously substituted polycyclic compounds.

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