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83-88-5 Suppliers

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Product FOB Price Min.Order Supply Ability Supplier
Factory supply Vitamin B2 Riboflavin
Cas No: 83-88-5
USD $ 50.0-60.0 / Kilogram 1 Kilogram 5 Metric Ton/Month Kono Chem Co.,Ltd Contact Supplier
supply high quality & purity Riboflavin 99% min
Cas No: 83-88-5
No Data 1 Metric Ton 1 Kilogram/Day Shaanxi WuZhiYuan Biological Technology Co.,Ltd Contact Supplier
Vitamin B2 riboflavin 80% FEED GRADE
Cas No: 83-88-5
No Data 1 Metric Ton 5 Metric Ton/Day HENAN JIXIANG CO.,LTD Contact Supplier
professional supplier for 99% vitamin B2 VB 2 powder CAS 83-88-5
Cas No: 83-88-5
No Data 1 Metric Ton 15 Metric Ton/Month XI AN FORTA CHEM CO.,LTD Contact Supplier
Hot sale Vitamin B2 (Riboflavine) supplier
Cas No: 83-88-5
No Data 10 Gram 1500 Kilogram/Month Jilin BaiShengYuan Import and Export Trade Co., Ltd. Contact Supplier
Cas No: 83-88-5
USD $ 60.0-60.0 / Gram 1 Gram 10000 Kilogram/Day Ningbo Kichem Co.,Ltd. Contact Supplier
Cas No: 83-88-5
No Data 25 Kilogram Metric Ton/Day HANGZHOU CLAKE BIOTECH CO.,LTD Contact Supplier
99.9% Nutrition Supplement Vitamin B2vitamin B?/riboflavin CAS:83-88-5 White Crystals Powder
Cas No: 83-88-5
No Data 100 Gram 20000 Kilogram/Day Hubei XinRunde Chemical Co., Ltd Contact Supplier
High Quality Vitamin B2 Riboflavin 98%
Cas No: 83-88-5
USD $ 1.0-1.0 / Metric Ton 25 Metric Ton 300 Metric Ton/Day EXCELLENT HEALTH PRODUCTS CO.,LTD Contact Supplier
Cas No: 83-88-5
No Data 1 Kilogram 5-10 Metric Ton/Month EnBridge PharmTech Co., Ltd. Contact Supplier

83-88-5 Usage


ChEBI: D-Ribitol in which the hydroxy group at position 5 is substituted by a 7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl moiety. It is a nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vege ables, but the richest natural source is yeast. The free form occurs only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as flavin mononucleotide and flavin-adenine dinucleotide.

Brand name

Flavaxin (Sterling Winthrop).

Purification Methods

It crystallises from H2O as a yellow-orange powder in three different forms with differing amounts of H2O. It melts if placed in an oil bath at 250o, but decomposes at 280o if heated at a rate of 5o/minute. It is also purified by crystallisation from 2M acetic acid, then extracted with CHCl3 to remove lumichrome impurity. [Smith & Metzler J Am Chem Soc 85 3285 1963.] Its solubility in H2O is 1g in 3-15L depending on the crystal structure. Its solubility in EtOH at 25o is 4.5mg in 100mL. Store it in the dark because it is decomposed to lumichrome by UV light. [Pearson The Vitamins vol V pp1-96 1967 and vol VII pp 1-96 1972, Gy.gy and Pearson eds, Academic Press, Beilstein 26 IV 2542.]


Nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, leafy vegetables. Richest natural source is yeast. Minute amounts present in all plant and animal cells. Vitamin (enzyme cofactor).


Vitamin B2; Vitamin cofactor; LD50(rat) 560 mg/kg ip

Chemical Properties

Yellow to orange/yellow crystalline powd

83-88-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1603006)  Riboflavin  United States Pharmacopeia (USP) Reference Standard 83-88-5 1603006-500MG 4,662.45CNY Detail
Cerilliant (V-015)  (−)-Riboflavin (Vitamin B2) solution  100 μg/mL (Methanol:0.1% Ammonium acetate in Water (1:1)), ampule of 1 mL, certified reference material 83-88-5 V-015-1ML 863.46CNY Detail
Sigma-Aldrich (Y0000757)  Riboflavinforpeakidentification  European Pharmacopoeia (EP) Reference Standard 83-88-5 Y0000757 1,880.19CNY Detail
Sigma-Aldrich (R0600000)  Riboflavin  European Pharmacopoeia (EP) Reference Standard 83-88-5 R0600000 1,880.19CNY Detail
Supelco (47861)  Riboflavin(B2)  analytical standard 83-88-5 000000000000047861 195.39CNY Detail
Sigma-Aldrich (PHR1054)  Riboflavin  pharmaceutical secondary standard; traceable to USP and PhEur 83-88-5 PHR1054-1G 732.19CNY Detail
Alfa Aesar (A11764)  Riboflavin, 98%    83-88-5 100g 541.0CNY Detail
Alfa Aesar (A11764)  Riboflavin, 98%    83-88-5 25g 168.0CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 500g 1,990.00CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 100g 630.00CNY Detail
TCI America (R0020)  Riboflavin   83-88-5 25g 250.00CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name Riboflavin (B2)

1.2 Other means of identification

Product number -
Other names Riboflavin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

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