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21719-85-7

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21719-85-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21719-85-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,1 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21719-85:
(7*2)+(6*1)+(5*7)+(4*1)+(3*9)+(2*8)+(1*5)=107
107 % 10 = 7
So 21719-85-7 is a valid CAS Registry Number.

21719-85-7Relevant articles and documents

The synthesis of N-(glycosylthioureylene)-aminothiophosphonic and -diaminothiophosphinic O-aryl esters

Cao, Ling-Hua,Zhou, Chuan-Jian,Gao, Hong-Yun,Liu, Yu-Ting

, p. 207 - 210 (2007/10/03)

Reactions of O-aryl dihydrazinothiophosphinates (4, 5) or O,O′-diaryl hydrazinothio-phosphonates (2) with glycosyl isocyanates (6) gave corresponding N-(glycosylthioureylene)-aminothiophosphonic and -diaminothiophosphinic O-aryl esters. Their structures w

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