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133185-44-1

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133185-44-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133185-44-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,8 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 133185-44:
(8*1)+(7*3)+(6*3)+(5*1)+(4*8)+(3*5)+(2*4)+(1*4)=111
111 % 10 = 1
So 133185-44-1 is a valid CAS Registry Number.

133185-44-1Relevant articles and documents

Synthesis and cyclization of novel lumazine - Enediyne chimeras

Choy, Nakyen,Russell, Keith C.

, p. 13 - 16 (2007/10/03)

Lumazine derivatives (6-8), appended with ethynyl groups in positions 7 and 8, were synthesized and examined for their ability to undergo Bergman cyclization. Oxo compound (7) was found to give good yields of Bergman cyclization products (? 37 %), whereas the analogues (6) and (8) did not cyclize as efficiently or gave no identifiable cyclization products.

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