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3-{4-[Bis-(2-chloro-ethyl)-amino]-phenyl}-2-(3-formylamino-butyrylamino)-propionic acid benzyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

22221-50-7

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22221-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22221-50-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,2,2 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 22221-50:
(7*2)+(6*2)+(5*2)+(4*2)+(3*1)+(2*5)+(1*0)=57
57 % 10 = 7
So 22221-50-7 is a valid CAS Registry Number.
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