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220741-56-0

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220741-56-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220741-56-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,7,4 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 220741-56:
(8*2)+(7*2)+(6*0)+(5*7)+(4*4)+(3*1)+(2*5)+(1*6)=100
100 % 10 = 0
So 220741-56-0 is a valid CAS Registry Number.

220741-56-0Relevant articles and documents

Simple and efficient method for n-boc protection of amines using PEG-400 as a reaction medium under mild conditions

Zeng, Hongyao,Li, Yongjia,Shao, Huawu

, p. 25 - 32 (2012)

Simple and efficient method for N-Boc protection of amines using PEG-400 as an ecofriendly reaction medium at room temperature is described. Various aromatic, heteroaromatic, and aliphatic amines were converted to the corresponding N-tert-butyl-carbamates in good to excellent yields in short times.

Chemoselective conversion of azides to t-butyl carbamates and amines

Jung, Yeon Joo,Chang, Yu Mi,Lee, Ji Hee,Yoon, Cheol Min

, p. 8735 - 8739 (2007/10/03)

Azides were converted to the corresponding carbamates using a system of 20 mol% of decaborane (B10H14) and 20 weight% of 10% Pd/C in methanol in the presence of di-tert-butyl dicarbonate at rt in high yields and to the corresponding amines using a system of 10 mol% of decaborane and 20 weight% of 10% Pd/C in methanol in the absence of di-tert-butyl dicarbonate at rt in high yields.

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