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55666-37-0

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55666-37-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55666-37-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,6 and 6 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 55666-37:
(7*5)+(6*5)+(5*6)+(4*6)+(3*6)+(2*3)+(1*7)=150
150 % 10 = 0
So 55666-37-0 is a valid CAS Registry Number.

55666-37-0Downstream Products

55666-37-0Relevant articles and documents

Synthesis and Characterization of Representative Octa-1,3,5,7-tetraenes and Deca-1,3,5,7,9-pentaenes

Spangler, Charles W.,Little, David A.

, p. 2379 - 2386 (2007/10/02)

Several representative conjugated linear tetraenes and pentaenes were prepared by a variety of synthetic methods including Wittig condensation, 1,8-Diazabicycloundec-7-ene (DBU)-induced dehydrobromination, and Hofmann elimination.For the preparation of (E,E)- and (Z,E)-octa-1,3,5,7-tetraene, the Hofmann elimination sequence is by far the most convenient method by synthesis, while DBU-induced dehydrobromination of (E,E)-4-bromonona-1,5,7-triene, produces excellent yields of (E,E,E)- and (3Z,5E,7E)-nona-1,3,5,7-tetraene.Deca-1,3,5,7,9-pentaene can be produced by several methods, but not in high yield.Undeca-1,3,5,7,9-pentaene and trideca-1,3,5,7,9,11-hexaene can also be prepared in low yield by the Wittig reaction.All the polyenes produced in this study polymerize rapidly in the crystalline state.

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