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3873-21-0

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3873-21-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3873-21-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,8,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3873-21:
(6*3)+(5*8)+(4*7)+(3*3)+(2*2)+(1*1)=100
100 % 10 = 0
So 3873-21-0 is a valid CAS Registry Number.

3873-21-0Downstream Products

3873-21-0Relevant articles and documents

Synthesis of 1-(t-butoxycarbonyl)benzotriazole and 1-(p-methoxybenzyloxycarbonyl)benzotriazole and their use in the protection of amino acids

Katritzky, Alan R.,Fali, Clara N.,Li, Jianqing,Ager, David J.,Prakash, Indra

, p. 1623 - 1630 (1997)

Benzotriazol-1-ylcarbonyl chloride, generated from benzotriazole and phosgene, reacts with t-butyl alcohol and p-methoxybenzyl alcohol to give 1-(t-butoxycarbonyl)benzotriazole (4) and 1-(p-methoxybenzyloxycarbonyl)benzotriazole (5), respectively in good yields. The synthetic utility of ragents 4 and 5 is shown by effective amino protection in phenylalanine and phenylglycine.

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