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157718-91-7

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157718-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157718-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157718-91:
(8*1)+(7*5)+(6*7)+(5*7)+(4*1)+(3*8)+(2*9)+(1*1)=167
167 % 10 = 7
So 157718-91-7 is a valid CAS Registry Number.

157718-91-7Relevant articles and documents

An 'Umpolung' Route to Peptide Mimetics of Thyrotropin-Releasing Hormone Based on a Cyclohexane Framework

Boes, Michael,Olson, Gary L.,Vincent, George p.

, p. 463 - 469 (2007/10/02)

Peptide mimetics of thyrotropin-releasing hormone (TRH) in which the peptide backbone is replaced by cyclohexane were synthesized from the cyclohexenone precursor 7.The aromatic side chains of the mimetics were derived from the corrsponding aldehydes whic

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