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81532-20-9

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81532-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81532-20-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,3 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81532-20:
(7*8)+(6*1)+(5*5)+(4*3)+(3*2)+(2*2)+(1*0)=109
109 % 10 = 9
So 81532-20-9 is a valid CAS Registry Number.

81532-20-9Downstream Products

81532-20-9Relevant articles and documents

Photochemical Reactions. Photochemistry of Homoconjugated Cyclobutanones. I. Synthesis and Photolysis of a Spirodeca-5,7-dien-1-one

Lyle, Terry A.,Frei, Bruno

, p. 2598 - 2605 (1981)

The title compound 4 was prepared in 54percent overall yield from eucarvone (5).On triplet sensitization 4 gives two products resulting from a 1,2-acyl shift (8 and 9), whereas singlet excitation of 4 causes decarbonylation and ketene elimination (4->10 a

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