139303-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139303-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,0 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139303-74:
(8*1)+(7*3)+(6*9)+(5*3)+(4*0)+(3*3)+(2*7)+(1*4)=125
125 % 10 = 5
So 139303-74-5 is a valid CAS Registry Number.
139303-74-5Relevant articles and documents
Selective acylation of monoalkylhydrazines
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, (2008/06/13)
A process for selectively monoacylating monoalkylhydrazines by reacting such with trichloromethyl aryl ketones.
Selective acylation of hydrazines
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, (2008/06/13)
This application relates to a process for selectively monoacylating hydrazines by reacting unsubstituted or monoalkylhydrazines with trichloromethyl aryl ketones.
