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70600-65-6

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70600-65-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70600-65-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,6,0 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 70600-65:
(7*7)+(6*0)+(5*6)+(4*0)+(3*0)+(2*6)+(1*5)=96
96 % 10 = 6
So 70600-65-6 is a valid CAS Registry Number.

70600-65-6Downstream Products

70600-65-6Relevant articles and documents

HIGHLY STEREO- AND REGIOSELECTIVE PALLADIUM-CATALIZED SYNTHESES OF (3E,5Z)-(3E,5E)-,AND (3Z,5E)-1,3,5-UNDECATRIENE

Andreini, Bianca Patrizia,Benetti, Massimiliano,Carpita, Adriano,Rossi, Renzo

, p. 4591 - 4600 (2007/10/02)

(3E,5Z)-1,3,5-Undecatriene (3) having 98.2percent stereoisomeric purity has been prepared by a new and expeditious route involving two selective Pd-catalyzed carbon-carbon bond forming reactions.The key step of this synthesis is a highly diastereoselective Pd-catalyzed cross-coupling reaction between 1-heptynylzinc chloride (11a) and a molar excess of (E)/(Z)-1,2-dibromoethylene (12). Another highly diastereoselective Pd-catalyzed reaction, which involves a cross-coupling between trimethylsilylethynylzinc chloride (15) and molar excesses of stereoisomeric mixtures of 1-bromo-1-alkenes (16), has been used to prepare (E)-1-trimethylsilyl-3-nonen-1-yne (10a), a key intermediate for the synthesis of (3E,5E)- and (3Z,5E)-undecatriene, (4) and (5).Compounds 3 and 4, isolated from the essential oil of Ferula galbaniflua, also occur together with compound 5 in the male attracting oils of seaweeds.These substances have odors highly appreciated in perfumery.

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