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161555-31-3

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161555-31-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161555-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,5,5 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 161555-31:
(8*1)+(7*6)+(6*1)+(5*5)+(4*5)+(3*5)+(2*3)+(1*1)=123
123 % 10 = 3
So 161555-31-3 is a valid CAS Registry Number.

161555-31-3Relevant articles and documents

The use of HMQC-TOCSY experiments for elucidating the structures of bicyclic lactams: Uncovering a surprise rearrangement in the synthesis of a key prophe building block

Moeller, Kevin D.,Hanau, Cathleen E.,D'Avignon, Andre

, p. 825 - 828 (1994)

HMQC-TOCSY experiments were used to unequivocally assign the ring skeletons of several bicyclic lactams. This work demonstrated the power of these techniques for establishing the complete carbon connectivity of peptide building blocks with closely overlap

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