78257-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78257-80-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,2,5 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78257-80:
(7*7)+(6*8)+(5*2)+(4*5)+(3*7)+(2*8)+(1*0)=164
164 % 10 = 4
So 78257-80-4 is a valid CAS Registry Number.
78257-80-4Relevant articles and documents
Preparation and Reactions of 1-Lithio-oxy-1-lithio-amino-allene Derivatives
Adlington, Robert M.,Barrett, Anthony G. M.
, p. 65 - 67 (1981)
The title compounds Li+22CH=C=C(-O-)-N-R1>, prepared from secondary α-keto-amides via the Shapiro reaction, reacted at C-2 with aldehydes, acetone, and deuterium oxide; the products 2CH