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1620136-11-9

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1620136-11-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620136-11-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,1,3 and 6 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1620136-11:
(9*1)+(8*6)+(7*2)+(6*0)+(5*1)+(4*3)+(3*6)+(2*1)+(1*1)=109
109 % 10 = 9
So 1620136-11-9 is a valid CAS Registry Number.

1620136-11-9Relevant articles and documents

An intramolecular [2 + 2] photocycloaddition approach to conformationally restricted bis-pyrrolidines

Fort, Diego A.,Woltering, Thomas J.,Alker, André M.,Bach, Thorsten

, p. 7152 - 7161 (2014/08/18)

With N-Boc-protected 4-(allylaminomethyl)-2(5H)furanones as starting materials, a photochemical approach is presented to give 3,9-diazatricyclo[5.3. 0.01,5]decanes as conformationally restricted bis-pyrrolidines. The products are orthogonally protected at the two nitrogen atoms and exhibit, depending on the substitution pattern at positions C5, C6, and C7, latent C 2 symmetry. When the furanones had a phenyl group at the 3-position (X3), alternative photochemical pathways were observed.

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