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75305-87-2

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75305-87-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75305-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,3,0 and 5 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 75305-87:
(7*7)+(6*5)+(5*3)+(4*0)+(3*5)+(2*8)+(1*7)=132
132 % 10 = 2
So 75305-87-2 is a valid CAS Registry Number.

75305-87-2Relevant articles and documents

Selectively S-Protected Cysteine Peptides. IV. Synthesis of Cysteine Peptides Using the S-Ethylthio Protecting Group. II

Kunzek, Herbert,Rose, Karl-Berthold,Graetz, Solveyg,Nesener, Eckehard

, p. 186 - 198 (2007/10/02)

Studying the problems of the selective sulphur protection in cysteine peptides, a model octapeptide from the sheep insulin A-chain was prepared by conventional synthesis using the S-ethylthio and the S-diphenylmethyl group.As consequence of the small acid

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