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854443-30-4

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854443-30-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 854443-30-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,4,4,4 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 854443-30:
(8*8)+(7*5)+(6*4)+(5*4)+(4*4)+(3*3)+(2*3)+(1*0)=174
174 % 10 = 4
So 854443-30-4 is a valid CAS Registry Number.

854443-30-4Relevant articles and documents

Synthesis of a β-turn mimetic suitable for incorporation in the peptide hormone LHRH

Yuan, Zhongqing,Kihlberg, Jan

, p. 4901 - 4909 (2007/10/03)

LHRH is a decapeptide hormone which plays a central role in neuroendocrinology. Conformational studies have suggested that LHRH may adopt a β-turn involving residues 5-8 when bound to its receptor. A β-turn mimetic with side chains corresponding to those of a Tyr-Gly-Leu-Orn tetrapeptide has therefore been synthesized for incorporation at positions 5-8 in LHRH. In the turn mimetic, residues i and i+1 are connected by a ψ[CH2O] isostere instead of an amide bond, while a covalent ethylene bridge replaces the hydrogen bond which is often found between residues i and i+3 in β-turns. The turn mimetic was assembled from three types of building blocks: an azido aldehyde, an Fmoc protected amino acid and a protected dipeptide amine.

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