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172291-69-9

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172291-69-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172291-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,9 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 172291-69:
(8*1)+(7*7)+(6*2)+(5*2)+(4*9)+(3*1)+(2*6)+(1*9)=139
139 % 10 = 9
So 172291-69-9 is a valid CAS Registry Number.

172291-69-9Relevant articles and documents

Synthesis of specifically deoxygenated disaccharide derivatives of the Shigella dysenteriae type 1 O-antigen

Mulard, Laurence A.,Claudemans, Cornelis P. J.

, p. 209 - 222 (2007/10/02)

The synthesis of methyl O-α-L-rhamnopyranosyl-(1 -> 2)-α-D-galactopyranosides specifically deoxygenated at position 2 (31), or 4 (21) of the rhamnopyranosyl residue was accomplished using methyl 3,4,6-tri-O-benzoyl-α-D-galactopyranoside (18) as the glycos

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