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85572-58-3

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85572-58-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85572-58-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,5,7 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 85572-58:
(7*8)+(6*5)+(5*5)+(4*7)+(3*2)+(2*5)+(1*8)=163
163 % 10 = 3
So 85572-58-3 is a valid CAS Registry Number.

85572-58-3Relevant articles and documents

Stereoselective synthesis of 9-β-d-arabianofuranosyl guanine and 2-amino-9-(β-d-arabianofuranosyl)purine

Yu, Xue-Jun,Li, Gai-Xia,Qi, Xiou-Xiang,Deng, You-Quan

, p. 683 - 685 (2007/10/03)

9-β-d-Arabianofuranosyl guanine (6) and 2-amino-9-(β-d- arabianofuranosyl)purine (8) were prepared from 2-amino-6-chloro-9-(2,3,5- triphenylmethoxyl-β-d-arabianofuranosyl)purine (4), a key intermediate which was stereoselectively prepared from 2,3,5-triphenylmethoxyl-d- arabianofuranose and 2-amino-6-chloro-purine. The yield of the intermediate was obviously improved and only β-isomer was formed by using the activated molecular sieve as environmental friendly catalyst, overcoming the defect that a 1:1 mixture of α- and β-isomers was formed, which was difficult to separate, when toxic mercury cyanide was previously used as catalyst.

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