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1608091-99-1

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1608091-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1608091-99-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,8,0,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1608091-99:
(9*1)+(8*6)+(7*0)+(6*8)+(5*0)+(4*9)+(3*1)+(2*9)+(1*9)=171
171 % 10 = 1
So 1608091-99-1 is a valid CAS Registry Number.

1608091-99-1Relevant articles and documents

Role of Configuration at C6 in Catalytic Activity of l-Proline-Derived Bifunctional Organocatalysts

Jin, Hui,Cho, Soo Min,Lee, Juyeol,Ryu, Do Hyun

, p. 2434 - 2437 (2017/05/12)

l-Proline-derived chiral bifunctional (thio)urea organocatalysts epi-PTU and epi-PU were newly synthesized, and their catalytic performances were compared with their C6 epimeric catalysts PTU and PU in various Michael reactions of nitrostyrene in terms of reactivities and stereoselectivities. The experimental results indicate that a proper relative stereochemistry at C2 and C6 in l-proline-derived bifunctional organocatalysts is important for successful catalysis and that catalysts (PTU and PU) with the 2S,6R configuration are much more efficient.

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