77331-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77331-18-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,3 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77331-18:
(7*7)+(6*7)+(5*3)+(4*3)+(3*1)+(2*1)+(1*8)=131
131 % 10 = 1
So 77331-18-1 is a valid CAS Registry Number.
77331-18-1Relevant articles and documents
NEW ACTIVATION OF CARBOXYLIC ACIDS BY REACTION WITH N,N-BIS-(2-OXO-3-OXAZOLIDINYL) PHOSPHORODIAMIDIC CHLORIDE (ClSPO)
Cabre-Castellvi, Juan,Palomo-Coll, Antonio Luis
, p. 4179 - 4182 (2007/10/02)
Pentacoordinated and quinquevalent phosphorus intermediates, have been isolated by reaction between the title reagent and carboxylic acids, prior to conversion into amides.
