221173-75-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221173-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,7 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221173-75:
(8*2)+(7*2)+(6*1)+(5*1)+(4*7)+(3*3)+(2*7)+(1*5)=97
97 % 10 = 7
So 221173-75-7 is a valid CAS Registry Number.
221173-75-7Relevant articles and documents
Properties of 2-(Bromomethyl)-4-oxo-1,3-benzoxazinium Perchlorate and its Derivatives
Vikrishchuk,Suzdalev,Ryabukhin,Zhdanov
, p. 564 - 569 (2007/10/03)
The reaction of 2-(bromomethyl)-4-oxo-1,3-benzoxazinium perchlorate with mono and binucleophiles was investigated. Hydrolysis of the salt furnished N-(bromoacetyl)salicylamide. Nucleophilic substitution of bromine in the latter yielded 2-(iodoacetyl)-4-ox
