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77767-25-0

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77767-25-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77767-25-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,6 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77767-25:
(7*7)+(6*7)+(5*7)+(4*6)+(3*7)+(2*2)+(1*5)=180
180 % 10 = 0
So 77767-25-0 is a valid CAS Registry Number.

77767-25-0Downstream Products

77767-25-0Relevant articles and documents

Cycloaddition Reactions of Heterocumulenes, XXI.-- and -Adducts from Isocyanates and 3-Dimethylamino-2H-azirines

Schaumann, Ernst,Grabley, Susanne,Adiwidjaja, Gunadi

, p. 264 - 276 (2007/10/02)

The alkyl isocyanates 1a and b react with the aminoazirines 2a and b, respectively, to give -adducts, the spiro structure of which is established by the X-ray structural investigation on 6a.In contract, the sterically hindered isocyanates 1c and 2b y

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