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7669-63-8

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7669-63-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7669-63-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,6 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7669-63:
(6*7)+(5*6)+(4*6)+(3*9)+(2*6)+(1*3)=138
138 % 10 = 8
So 7669-63-8 is a valid CAS Registry Number.

7669-63-8Downstream Products

7669-63-8Relevant articles and documents

USE OF PENTAFLUOROPHENYL ESTERS IN THE SYNTHESIS OF INTERMEDIATE FRAGMENTS OF ACTH

Karel'skii, V. N.,Krysin, E. P.,Antonov, A. A.,Rostovskaya, G. E.

, p. 90 - 94 (2007/10/02)

The results are given of the synthesis of the heptapeptide 13-19 of the natural sequence of ACTH using, in a number of stages, the pentafluorophenyl esters of amino acids and peptides in combination with the temporary silyl protection of the carboxy group

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