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857960-22-6

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857960-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857960-22-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,9,6 and 0 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 857960-22:
(8*8)+(7*5)+(6*7)+(5*9)+(4*6)+(3*0)+(2*2)+(1*2)=216
216 % 10 = 6
So 857960-22-6 is a valid CAS Registry Number.

857960-22-6Relevant articles and documents

Flash vacuum pyrolysis of 2,2-dioxo-1H,3H-pyrrolo[1,2-c]thiazoles and 2-vinyl-1H-pyrroles

Soares, Maria I.L.,Lopes, Susana M.M.,Cruz, Pedro F.,Brito, Rui M.M.,Pinho e Melo, Teresa M.V.D.

, p. 9745 - 9753 (2008/12/22)

The flash vacuum pyrolysis of new 1,1-dimethyl- and 1-methyl-1H,3H-pyrrolo[1,2-c]thiazole-2,2-dioxides gave penta-substituted 2-vinyl-1H-pyrroles via sigmatropic [1,8]-H shift of the corresponding azafulvenium methide intermediates. In some cases these 1H-pyrroles underwent rearrangement to 2-allyl-1H-pyrroles. Di-substituted 2-vinylpyrroles have also been prepared and their reactivity studied. Under FVP N-benzyl-pyrrol-2-ylpropenoates were converted into 3H-pyrrolizin-3-ones. On the other hand, microwave-assisted reaction of 1-benzyl-2-vinyl-1H-pyrrole gave a 4,5,6,7-tetrahydro-1H-indole derivative.

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