The CAS Registry Mumber 92278-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,2,7 and 8 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 92278-81: (7*9)+(6*2)+(5*2)+(4*7)+(3*8)+(2*8)+(1*1)=154 154 % 10 = 4 So 92278-81-4 is a valid CAS Registry Number.
α-Chymotrypsine catalyzed peptide syntheses using the 4-sulfobenzyl rests as dissolving carboxyl protecting group
Kuhl,Walpuski,Jakubke
, p. 280 - 280 (2007/10/02)
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N-[1-[N-[(phenylmethoxy)carbonyl]-O-(phenylmethyl)-L-tyrosyl]-L-prolyl]-,
(4-sulfophenyl)methyl ester, monosodium salt