78639-52-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78639-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,3 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 78639-52:
(7*7)+(6*8)+(5*6)+(4*3)+(3*9)+(2*5)+(1*2)=178
178 % 10 = 8
So 78639-52-8 is a valid CAS Registry Number.
78639-52-8Relevant academic research and scientific papers
Synthesis of Symmetrical Diaminocarbodiphosphoranes R2NPh2P=C=PPh2NR2
Appel, Rolf,Waid, Karl
, p. 131 - 134 (2007/10/02)
The hitherto unknown symmetrical diamino carbodiphosphoranes R2NPh2P=C=PPh2NR2 (5a-d, R = CH3, Et, nPr, nBu) are obtained in good yield by NaH dehydrohalogenation of the corresponding aminophosphonium salts (3a-d). 3a-d can be prepared by aminol
