128721-94-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128721-94-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,2 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128721-94:
(8*1)+(7*2)+(6*8)+(5*7)+(4*2)+(3*1)+(2*9)+(1*4)=138
138 % 10 = 8
So 128721-94-8 is a valid CAS Registry Number.
128721-94-8Relevant articles and documents
Phase-transfer catalyzed addition of hydrogen cyanide to N-substituted hydrazones
Chiba,Okimoto
, p. 209 - 211 (2007/10/02)
In a two-phase system consisting of aqueous sodium cyanide and an inert organic solvent and containing a phase-transfer catalyst, ketone benzoylhydrazones, tosylhydrazones, and methoxycarbonylhydrazones upon addition of acetic acid readily add hydrogen cy