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57772-67-5

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57772-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57772-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,7 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57772-67:
(7*5)+(6*7)+(5*7)+(4*7)+(3*2)+(2*6)+(1*7)=165
165 % 10 = 5
So 57772-67-5 is a valid CAS Registry Number.

57772-67-5Relevant articles and documents

A novel versatile phosphoramidite building block for the synthesis of 5′- and 3′-hydrazide modified oligonucleotides

Antsypovich, Sergey I.,Von Kiedrowski, Guenter

, p. 211 - 226 (2005)

We introduce a novel versatile phosphoramidite building block for the modification of oligonucleotides (ONs) with acyl hydrazides on the 5′- or 3′-terminus, or both. The reaction of these hydrazide functionalized ONs with 4-methoxyphenylaldehyde is demons

Facile folding of insulin variants bearing a prosthetic C-peptide prepared by α-ketoacid-hydroxylamine (KAHA) ligation

Boross, Gábor N.,Shimura, Satomi,Besenius, Melissa,Tennagels, Norbert,Rossen, Kai,Wagner, Michael,Bode, Jeffrey W.

, p. 8388 - 8395 (2018/11/24)

The chemical synthesis of insulin is an enduring challenge due to the hydrophobic peptide chains and construction of the correct intermolecular disulfide pattern. We report a new approach to the chemical synthesis of insulin using a short, traceless, pros

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