74552-28-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74552-28-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,5 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74552-28:
(7*7)+(6*4)+(5*5)+(4*5)+(3*2)+(2*2)+(1*8)=136
136 % 10 = 6
So 74552-28-6 is a valid CAS Registry Number.
74552-28-6Relevant articles and documents
METHODS FOR PREPARING BENZOXAZINES
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Page/Page column 44-45, (2021/01/23)
A method is provided for preparing a compound / the method comprising carrying out the following reaction: Formula (i); Formula (ii) where: R10 is hydrogen or a hydroxy protecting group; PG is an amine protecting group; and q is 1 where PG is a