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129778-98-9

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129778-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129778-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,7 and 8 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129778-98:
(8*1)+(7*2)+(6*9)+(5*7)+(4*7)+(3*8)+(2*9)+(1*8)=189
189 % 10 = 9
So 129778-98-9 is a valid CAS Registry Number.

129778-98-9Relevant articles and documents

Preparation of protected α-alkoxyglycines

Kawai, Masao,Hosoda, Kouji,Omori, Yoshimasa,Yamada, Keiichi,Hayakawa, Shoko,Yamamura, Hatsuo,Butsugan, Yasuo

, p. 1545 - 1554 (1996)

N-Carbobenzoxy-α-alkoxyglycine esters were synthesized by H2SO4-catalyzed O-alkylation of N-carbobenzoxy-α-hydroxyglycine and also by base treatment of N-carbobenzoxy-N-chloroglycine methyl ester in the corresponding alcohol. Saponification of the protected α-alkoxyglycines gave free acids which can be used for the synthesis of α-alkoxyglycine residue-containing peptides.

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