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75744-89-7

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75744-89-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75744-89-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,7,4 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 75744-89:
(7*7)+(6*5)+(5*7)+(4*4)+(3*4)+(2*8)+(1*9)=167
167 % 10 = 7
So 75744-89-7 is a valid CAS Registry Number.

75744-89-7Upstream product

75744-89-7Relevant articles and documents

Synthese und Koordinationsverhalten von Selenoalkinylen R-Se-CC-R'

Lang, Heinrich,Keller, Holger,Imhof, Wolfgang,Martin, Sabine

, p. 417 - 422 (2007/10/02)

Synthesis and Coordination Ability of Selenoalkynes R-Se-CC-R' Several synthetic methods for the preparation of selenoalkynes R-Se-CC-R'(1) are discussed. 1 reacts with octacarbonyl dicobalt to yield the η2-?-side-on coordinated alkyne complexes R-Se2-CC-R')Co2(CO)6> (8) which contain a sterically hindered carbon-cobalt tetrahedrane cluster unit.The identity of compounds 1 and 8 is documented by analytical and spectroscopic (IR, MS, 1H-, 77Se-, and 13C-NMR) data as well as by X-ray analysis of C6H5-Se2-CC-C6H5)Co2(CO)6> (8a).

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