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127740-25-4

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127740-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127740-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,4 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 127740-25:
(8*1)+(7*2)+(6*7)+(5*7)+(4*4)+(3*0)+(2*2)+(1*5)=124
124 % 10 = 4
So 127740-25-4 is a valid CAS Registry Number.

127740-25-4Downstream Products

127740-25-4Relevant articles and documents

2,2-Bis(ethoxycarbonyl)vinyl (BECV) as a versatile amine protecting group for selective functional-group transformations

Ilangovan, Andivelu,Kumar, Rajendran Ganesh

supporting information; experimental part, p. 2938 - 2943 (2010/07/02)

A 2,2-Bis(ethoxycarbonyl) vinyl- (BECV) group was used for the selective protection of amines at room temperature in the presence of potentially interfering functional groups such as OH, SH, COOH as well as other NH 2 groups. Several functional group transformations such as esterification, O-alkylation, O-acylation, N-alkylation, N-acylation, S-alkylation can selectively be carried out in the presence of the BECV group. The selective deprotection of the BECV group was achieved in a short time using ethylenediamine at room temperature while several other functional groups such as benzoate, aliphatic esters, amides and ethers remain intact. The BECV group shows orthogonal stability against the common protecting groups such as Fmoc, Cbz and Boc.

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