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1223405-87-5

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1223405-87-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1223405-87-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,3,4,0 and 5 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1223405-87:
(9*1)+(8*2)+(7*2)+(6*3)+(5*4)+(4*0)+(3*5)+(2*8)+(1*7)=115
115 % 10 = 5
So 1223405-87-5 is a valid CAS Registry Number.

1223405-87-5Relevant articles and documents

(2-Nitrophenyl)acetyl: A new, selectively removable hydroxyl protecting group

Daragics, Katalin,Fuegedi, Peter

supporting information; experimental part, p. 2076 - 2079 (2010/09/15)

Figure presented The utility of the (2-nitrophenyl)acetyl (NPAc) group for the protection of hydroxyl functions is reported. (2-Nitrophenyl)acetates are readily prepared starting from the commercially available, inexpensive (2-nitrophenyl)acetic acid, and these esters are stable under a series of common carbohydrate transformations. The NPAc group can be removed selectively using Zn and NH4Cl without affecting a series of common protecting groups. This new protecting group is orthogonal with the commonly used tert-butyldimethylsilyl, levulinoyl, 9-fluorenylmethoxycarbonyl, naphthylmethyl, and p-methoxybenzyl groups.

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