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781577-54-6

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781577-54-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 781577-54-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,1,5,7 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 781577-54:
(8*7)+(7*8)+(6*1)+(5*5)+(4*7)+(3*7)+(2*5)+(1*4)=206
206 % 10 = 6
So 781577-54-6 is a valid CAS Registry Number.

781577-54-6Relevant articles and documents

METHODS FOR SYNTHESIZING ANHYDROUS LACTIC ACID

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Paragraph 0042; 0064, (2021/11/13)

A method of synthesizing anhydrous lactic acid is provided by reacting a compound of formula (Ia): with an acid compound of formula HnX in a first solvent to produce a reaction mixture comprising a compound of formula (Ib) and a lactic acid compound of formula (I) in solution with the first solvent and/or water. n is an integer other than 0, x is 0, or an integer other than 0, M is an alkali metal or alkaline earth metal and X is the conjugate base of the acid compound of formula HnX. The resulting reaction mixture is filtered to produce a filtrate containing lactic acid in solution. The filtrate is crystalized from a second solvent to produce anhydrous lactic acid.

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